ETSI EN 302 550-1-2 V1.1.1 (2010-02)
Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 2: Inner Physical Layer Single Carrier Modulation
Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 2: Inner Physical Layer Single Carrier Modulation
DEN/SES-00312-1-2
Satelitske zemeljske postaje in sistemi (SES) - Satelitski digitalni radijski sistemi - 1. del: Fizična plast radijskega vmesnika - 2. poddel: Modulacija ene nosilne frekvence na notranji fizični plasti
Pričujoči dokument zadeva radijski vmesnik SDR radiodifuzijskih sprejemnikov. Določa funkcionalnost notranje fizične plasti z modulacijo ene nosilne frekvence. Dopušča izvajanje tega dela sistema v interoperabilnem načinu.
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Satellite Earth Stations and Systems (SES) - Satellite Digital Radio (SDR) Systems - Part 1: Physical Layer of the Radio Interface - Sub-part 2: Inner Physical Layer Single Carrier Modulation35.100.10Physical layer33.060.30Radiorelejni in fiksni satelitski komunikacijski sistemiRadio relay and fixed satellite communications systemsICS:Ta slovenski standard je istoveten z:EN 302 550-1-2 Version 1.1.1SIST EN 302 550-1-2 V1.1.1:2010en01-april-2010SIST EN 302 550-1-2 V1.1.1:2010SLOVENSKI
STANDARD
SIST EN 302 550-1-2 V1.1.1:2010
ETSI EN 302 550-1-2 V1.1.1 (2010-02)European Standard (Telecommunications series) Satellite Earth Stations and Systems (SES);Satellite Digital Radio (SDR) Systems;Part 1: Physical Layer of the Radio Interface;Sub-part 2: Inner Physical Layer Single Carrier Modulation SIST EN 302 550-1-2 V1.1.1:2010
ETSI ETSI EN 302 550-1-2 V1.1.1 (2010-02)2
Reference DEN/SES-00312-1-2 Keywords digital, layer 1, radio, satellite ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88
Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http://portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2010. All rights reserved.
DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. LTE™ is a Trade Mark of ETSI currently being registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association. SIST EN 302 550-1-2 V1.1.1:2010
ETSI ETSI EN 302 550-1-2 V1.1.1 (2010-02)3 Contents Intellectual Property Rights . 4 Foreword . 4 Introduction . 4 1 Scope . 5 2 References . 5 2.1 Normative references . 5 2.2 Informative references . 5 3 Definitions, symbols and abbreviations . 6 3.1 Definitions . 6 3.2 Symbols . 6 3.3 Abbreviations . 6 4 Inner physical layer - Single Carrier . 6 4.1 Interfacing to OPL (Outer Physical Layer) . 7 4.2 The profile approach - different single carrier modes . 8 4.3 Generation of one Phy section . 8 4.3.1 Overview . 8 4.3.1.1 Overview of mode 1 . 9 4.3.1.2 Overview of mode 2 . 10 4.3.2 IPL-SC signalling and padding . 10 4.3.3 Energy dispersal (scrambling) . 11 4.3.4 Preamble insertion . 11 4.3.4.1 Mode 1: Preamble choice . 11 4.3.4.2 Mode 2: Preamble choice . 12 4.4 Bit mapping to constellation . 13 4.4.1 QPSK Modulation . 13 4.4.2 8PSK Modulation . 13 4.4.3 16APSK Modulation. 14 4.5 Pulse shaping . 14 5 Parameter selection. 15 5.1 Example 1: profile IPL-SC-A: symbol rate of 4,31 Msps . 15 5.2 Example 2: profile IPL-SC-A: symbol rate of 10,87 Msps . 16 5.3 Example 3: profile IPL-SC-B: symbol rate of 1,84 Msps . 17 5.4 Example 4: profile IPL-SC-B: symbol rate of 1,49 Msps . 17 History . 18
SIST EN 302 550-1-2 V1.1.1:2010
ETSI ETSI EN 302 550-1-2 V1.1.1 (2010-02)4 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Satellite Earth Stations and Systems (SES). The present document is part 1, sub-part 2 of a multi-part deliverable. Full details of the entire series can be found in part 1, sub-part 1 [i.4].
National transposition dates Date of adoption of this EN: 15 February 2010 Date of latest announcement of this EN (doa): 31 May 2010 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
30 November 2010 Date of withdrawal of any conflicting National Standard (dow): 30 November 2010
Introduction An SDR system enables broadcast to fixed and mobile receivers through satellites and complementary terrestrial transmitters. Functionalities, architecture and technologies of such systems are described in TR 102 525 [i.5]. Several existing and planned ETSI standards specify parts of the SDR system, with the aim of interoperable implementations. The physical layer of the radio interface (air interface) is divided up into the outer physical layer, the inner physical layer with single carrier modulation, and the inner physical layer with multi carrier modulation. These parts can be used all together in SDR compliant equipment, or in conjunction with other existing and future specifications. The present document specifies the inner physical layer with single carrier modulation. The inner physical layer with multi carrier modulation is specified in EN 302 550-1-3 [i.3], and the outer physical layer in EN 305 550-1-1 [i.4]. Guidelines for using the physical layer standard can be found in TR 102 604 [i.6].
The physical layer specifications have previously been published as "Technical Specification (TS)" type ETSI deliverables. The present document supersedes TS 102 551-1 [i.7] and is recommended for new implementations. The functional difference between the previous TS 102 551-1 [i.7] and the present document is that the exclusion of the IPL-MC Mode 1 is taken into account. SIST EN 302 550-1-2 V1.1.1:2010
ETSI ETSI EN 302 550-1-2 V1.1.1 (2010-02)5 1 Scope The present document concerns the radio interface of SDR broadcast receivers. It specifies functionality of the inner physical layer with single carrier modulation. It allows implementing this part of the system in an interoperable way. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • Non-specific reference may be made only to a complete document or a part thereof and only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes of the referring document; - for informative references. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are indispensable for the application of the present document. For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. Not applicable. 2.2 Informative references The following referenced documents are not essential to the use of the present document but they assist the user with regard to a particular subject area. For non-specific references, the latest version of the referenced document (including any amendments) applies. [i.1] ETSI EN 302 307 (V1.1.1): "Digital Video Broadcasting (DVB); Second generation framing structure, channel coding and modulation systems for Broadcasting, Interactive Services, News Gathering and other broadband satellite applications". [i.2] ITU-T Recommendation O.153 (1992): "Basic parameters for the measurement of error performance at bit rates below the primary rate". [i.3] ETSI EN 302 550-1-3: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 3: Inner Physical Layer Multi Carrier Modulation". [i.4] ETSI EN 302 550-1-1: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 1: Outer Physical Layer". [i.5] ETSI TR 102 525 (V1.1.1): "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) service; Functionalities, architecture and technologies". [i.6] ETSI TR 102 604: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Guidelines for the use of the physical layer standards". SIST EN 302 550-1-2 V1.1.1:2010
ETSI ETSI EN 302 550-1-2 V1.1.1 (2010-02)6 [i.7] ETSI TS 102 551-1 (V1.1.1): "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Inner Physical Layer of the Radio Interface; Part 1: Single Carrier Transmission". 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: floor function: function that rounds number down, towards zero, to the nearest integer 3.2 Symbols For the purposes of the present document, the following symbols apply: α roll off factor 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: 16APSK 16 Amplitude and Phase Shift Keying 8PSK 8 Phase Shift Keying BW BandWidth C/N Carrier to Noise ratio C-TS Channel Transport Stream CU Capacity Unit DVB Digital Video Broadcasting I In-phase IPL Inner Physical Layer IPL-MC Inner Physical Layer, Multi Carrier IPL-SC Inner Physical Layer, Single Carrier ISI Inter Symbol Interference ksps kilo symbols per second LSB Least Significant Bit MSB Most Significant Bit Msps Mega symbols per second OPL Outer Physical Layer Q Quadrature QPSK Quaternary Phase Shift Keying RF Radio Frequency RFU Reserved for Future Use SDR Satellite Digital Radio S-TS Service Transport Stream XOR eXclusive OR 4 Inner physical layer - Single Carrier The functionality of the Inner Physical Layer (Single Carrier), in the following denoted IPL-SC, is to provide a robust modulation scheme for single carrier transmissions. The single carrier modulation is mainly applicable to satellite signal transmission but may be reused in other transmission environments. However, certain parameters are especially designed and optimized for satellite requirements.
The IPL-SC is embedded between the OPL (C-TS delivery) and the RF frontend (modulation) as depicted in figure 1. SIST EN 302 550-1-2 V1.1.1:2010
ETSI ETSI EN 302 550-1-2 V1.1.1 (2010-02)7
Figure 1: General block diagram of the ETSI SES SDR system concept with selection of IPL-SC The general block diagram of the IPL-SC functionality is given in figure 2. Please notify that the generation of each Phy section can be handled individually (dashed box), whereas rolloff filtering is applied to the stream of mapped symbols of many Phy section (due to its dispersive nature).
Figure 2: Block diagram of the ETSI SES SDR compliant IPL-SC 4.1 Interfacing to OPL (Outer Physical Layer) Its interface to the OPL (Outer Physical Layer) is the C-TS (channel transport stream), which is defined in EN 302 550-1-1 [i.4]. For this special IPL-SC, the parameters which are passed to the OPL are derived within EN 302 550-1-1 [i.4]. This IPL-SC provides an input for only one single C-TS and generates the signal for one RF carrier. If more than one carrier needs to be supported, multiple instances of the IPL-SC need to be instantiated in parallel. The parameters that are passed to the OPL are as follows: • frame length in integer number of CU (capacity units). One IPL-SC frame is composed by a number of Phy sections. Their parameters are denoted in clause 5. As different modes are distinguished (see clause 4.3), the interfacing to the OPL is also slightly different for the two modes: • For mode 1, it is mandatory to have integer numbers of CU which can be divided without remainder by 2 (for QPSK), by 3 (for 8PSK) and by 4 (for 16APSK). Other numbers of CU lead to Phy sections that miss some CU, and non-periodic preamble structure would be introduced. • For mode 2, it is desirable to have integer numbers of CU which can be divided without remainder by 2 (for QPSK), by 3 (for 8PSK) and by 4 (for 16APSK). Other numbers of CU lead to non-periodic preamble structure for the different modulation orders. Examples for a reasonable choice of parameters are given in clause 5. With these parameters, the exact throughput of the IPL-SC can be derived in CU per time. The smallest unit to be processed by the IPL-SC is one CU. To be able to benefit from the gain of hybrid configurations (e.g. using IPL-SC together with IPL-MC), it is mandatory to have equal frame lengths on both IPLs. SIST EN 302 550-1-2 V1.1.1:2010
ETSI ETSI EN 302 550-1-2 V1.1.1 (2010-02)8 If modes 2, 2s, 3 or 4 of the IPL-MC [i.3] were used, the joint frame length of 432 ms is chosen for the IPL-MC frame length. 4.2 The profile approach - different single carrier modes To cope with different design constraints that arise from the possible use scenarios of the IPL-SC, two modes (denoted mode 1 and mode 2) are defined which use a different share of pilots. These modes are associated to profiles that are distinguished by their symbol rate and number of capacity units per inserted preamble, so that their adaptation to different channel bandwidths is easily possible. Profile IPL-SC-A is related to mode 1, and IPL-SC-B is related to mode 2, respectively. For each profile, two examples are given. To comply with the different profiles, profile IPL-SC-A needs to be capable to work with all symbol rates ranging from 3 Msps up to 12 Msps. A granularity (or step-size) of 88 ksps for the choice of symbol rates is provided in mode 1. If compliance with profile IPL-SC-B is desired, symbol rates ranging from 1 Msps up to 3 Msps need to be supported. A granularity (or step-size) of 5 ksps for the choice of symbol rates is provided in mode 2. The main target frequency bands and channel bandwidths are: Table 1: Different examples for the two profiles IPL-SC-A and IPL-SC-B
S-Band 4,31 Msps
L-Band 10,87 Msps L-Band 1,84 Msps L-Band or S-Band 1,49 Msps Profile name IPL-SC-A
IPL-SC-A IPL-SC-B IPL-SC-B Supported modes 1
1 2 2 Carrier frequency 2,0 GHz to 2,3 GHz
1,4 GHz to 1,5 GHz 1,4 GHz to 1,5 GHz 1,4 GHz to 1,5 GHz 2,0 GHz to 2,3 GHz Channel bandwidth 4,96 MHz
12,5 MHz 2,12 MHz 1,71 MHz Symbol rate 4,31 Msps
10,87 Msps 1,84 Msps 1,49 Msps min/max symbol rate 3 Msps/12 Msps
3 Msps / 12 Msps 1 Msps / 3 Msps 1 Msps / 3 Msps IPL-SC frame length 432 ms
432 ms 432 ms 432 ms
The present docu
...
ETSI EN 302 550-1-2 V1.1.1 (2010-02)
European Standard (Telecommunications series)
Satellite Earth Stations and Systems (SES);
Satellite Digital Radio (SDR) Systems;
Part 1: Physical Layer of the Radio Interface;
Sub-part 2: Inner Physical Layer Single Carrier Modulation
---------------------- Page: 1 ----------------------
2 ETSI EN 302 550-1-2 V1.1.1 (2010-02)
Reference
DEN/SES-00312-1-2
Keywords
digital, layer 1, radio, satellite
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2010.
All rights reserved.
TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
LTE™ is a Trade Mark of ETSI currently being registered
for the benefit of its Members and of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 ETSI EN 302 550-1-2 V1.1.1 (2010-02)
Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
3 Definitions, symbols and abbreviations . 6
3.1 Definitions . 6
3.2 Symbols . 6
3.3 Abbreviations . 6
4 Inner physical layer - Single Carrier . 6
4.1 Interfacing to OPL (Outer Physical Layer) . 7
4.2 The profile approach - different single carrier modes . 8
4.3 Generation of one Phy section . 8
4.3.1 Overview . 8
4.3.1.1 Overview of mode 1 . 9
4.3.1.2 Overview of mode 2 . 10
4.3.2 IPL-SC signalling and padding . 10
4.3.3 Energy dispersal (scrambling) . 11
4.3.4 Preamble insertion . 11
4.3.4.1 Mode 1: Preamble choice . 11
4.3.4.2 Mode 2: Preamble choice . 12
4.4 Bit mapping to constellation . 13
4.4.1 QPSK Modulation . 13
4.4.2 8PSK Modulation . 13
4.4.3 16APSK Modulation. 14
4.5 Pulse shaping . 14
5 Parameter selection. 15
5.1 Example 1: profile IPL-SC-A: symbol rate of 4,31 Msps . 15
5.2 Example 2: profile IPL-SC-A: symbol rate of 10,87 Msps . 16
5.3 Example 3: profile IPL-SC-B: symbol rate of 1,84 Msps . 17
5.4 Example 4: profile IPL-SC-B: symbol rate of 1,49 Msps . 17
History . 18
ETSI
---------------------- Page: 3 ----------------------
4 ETSI EN 302 550-1-2 V1.1.1 (2010-02)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Satellite Earth
Stations and Systems (SES).
The present document is part 1, sub-part 2 of a multi-part deliverable. Full details of the entire series can be found in
part 1, sub-part 1 [i.4].
National transposition dates
Date of adoption of this EN: 15 February 2010
Date of latest announcement of this EN (doa): 31 May 2010
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 November 2010
Date of withdrawal of any conflicting National Standard (dow): 30 November 2010
Introduction
An SDR system enables broadcast to fixed and mobile receivers through satellites and complementary terrestrial
transmitters. Functionalities, architecture and technologies of such systems are described in TR 102 525 [i.5].
Several existing and planned ETSI standards specify parts of the SDR system, with the aim of interoperable
implementations. The physical layer of the radio interface (air interface) is divided up into the outer physical layer, the
inner physical layer with single carrier modulation, and the inner physical layer with multi carrier modulation. These
parts can be used all together in SDR compliant equipment, or in conjunction with other existing and future
specifications.
The present document specifies the inner physical layer with single carrier modulation. The inner physical layer with
multi carrier modulation is specified in EN 302 550-1-3 [i.3], and the outer physical layer in EN 305 550-1-1 [i.4].
Guidelines for using the physical layer standard can be found in TR 102 604 [i.6].
The physical layer specifications have previously been published as "Technical Specification (TS)" type ETSI
deliverables. The present document supersedes TS 102 551-1 [i.7] and is recommended for new implementations. The
functional difference between the previous TS 102 551-1 [i.7] and the present document is that the exclusion of the
IPL-MC Mode 1 is taken into account.
ETSI
---------------------- Page: 4 ----------------------
5 ETSI EN 302 550-1-2 V1.1.1 (2010-02)
1 Scope
The present document concerns the radio interface of SDR broadcast receivers. It specifies functionality of the inner
physical layer with single carrier modulation. It allows implementing this part of the system in an interoperable way.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
Not applicable.
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI EN 302 307 (V1.1.1): "Digital Video Broadcasting (DVB); Second generation framing
structure, channel coding and modulation systems for Broadcasting, Interactive Services, News
Gathering and other broadband satellite applications".
[i.2] ITU-T Recommendation O.153 (1992): "Basic parameters for the measurement of error
performance at bit rates below the primary rate".
[i.3] ETSI EN 302 550-1-3: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR)
Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 3: Inner Physical Layer Multi
Carrier Modulation".
[i.4] ETSI EN 302 550-1-1: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR)
Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 1: Outer Physical Layer".
[i.5] ETSI TR 102 525 (V1.1.1): "Satellite Earth Stations and Systems (SES); Satellite Digital Radio
(SDR) service; Functionalities, architecture and technologies".
[i.6] ETSI TR 102 604: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR)
Systems; Guidelines for the use of the physical layer standards".
ETSI
---------------------- Page: 5 ----------------------
6 ETSI EN 302 550-1-2 V1.1.1 (2010-02)
[i.7] ETSI TS 102 551-1 (V1.1.1): "Satellite Earth Stations and Systems (SES); Satellite Digital Radio
(SDR) Systems; Inner Physical Layer of the Radio Interface; Part 1: Single Carrier Transmission".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
floor function: function that rounds number down, towards zero, to the nearest integer
3.2 Symbols
For the purposes of the present document, the following symbols apply:
α roll off factor
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
16APSK 16 Amplitude and Phase Shift Keying
8PSK 8 Phase Shift Keying
BW BandWidth
C/N Carrier to Noise ratio
C-TS Channel Transport Stream
CU Capacity Unit
DVB Digital Video Broadcasting
I In-phase
IPL Inner Physical Layer
IPL-MC Inner Physical Layer, Multi Carrier
IPL-SC Inner Physical Layer, Single Carrier
ISI Inter Symbol Interference
ksps kilo symbols per second
LSB Least Significant Bit
MSB Most Significant Bit
Msps Mega symbols per second
OPL Outer Physical Layer
Q Quadrature
QPSK Quaternary Phase Shift Keying
RF Radio Frequency
RFU Reserved for Future Use
SDR Satellite Digital Radio
S-TS Service Transport Stream
XOR eXclusive OR
4 Inner physical layer - Single Carrier
The functionality of the Inner Physical Layer (Single Carrier), in the following denoted IPL-SC, is to provide a robust
modulation scheme for single carrier transmissions. The single carrier modulation is mainly applicable to satellite signal
transmission but may be reused in other transmission environments. However, certain parameters are especially
designed and optimized for satellite requirements.
The IPL-SC is embedded between the OPL (C-TS delivery) and the RF frontend (modulation) as depicted in figure 1.
ETSI
---------------------- Page: 6 ----------------------
7 ETSI EN 302 550-1-2 V1.1.1 (2010-02)
Figure 1: General block diagram of the ETSI SES SDR system concept with selection of IPL-SC
The general block diagram of the IPL-SC functionality is given in figure 2. Please notify that the generation of each Phy
section can be handled individually (dashed box), whereas rolloff filtering is applied to the stream of mapped symbols
of many Phy section (due to its dispersive nature).
Figure 2: Block diagram of the ETSI SES SDR compliant IPL-SC
4.1 Interfacing to OPL (Outer Physical Layer)
Its interface to the OPL (Outer Physical Layer) is the C-TS (channel transport stream), which is defined in
EN 302 550-1-1 [i.4]. For this special IPL-SC, the parameters which are passed to the OPL are derived within
EN 302 550-1-1 [i.4].
This IPL-SC provides an input for only one single C-TS and generates the signal for one RF carrier. If more than one
carrier needs to be supported, multiple instances of the IPL-SC need to be instantiated in parallel.
The parameters that are passed to the OPL are as follows:
• frame length in integer number of CU (capacity units).
One IPL-SC frame is composed by a number of Phy sections. Their parameters are denoted in clause 5.
As different modes are distinguished (see clause 4.3), the interfacing to the OPL is also slightly different for the two
modes:
• For mode 1, it is mandatory to have integer numbers of CU which can be divided without remainder by 2 (for
QPSK), by 3 (for 8PSK) and by 4 (for 16APSK). Other numbers of CU lead to Phy sections that miss some
CU, and non-periodic preamble structure would be introduced.
• For mode 2, it is desirable to have integer numbers of CU which can be divided without remainder by 2 (for
QPSK), by 3 (for 8PSK) and by 4 (for 16APSK). Other numbers of CU lead to non-periodic preamble
structure for the different modulation orders.
Examples for a reasonable choice of parameters are given in clause 5.
With these parameters, the exact throughput of the IPL-SC can be derived in CU per time. The smallest unit to be
processed by the IPL-SC is one CU.
To be able to benefit from the gain of hybrid configurations (e.g. using IPL-SC together with IPL-MC), it is mandatory
to have equal frame lengths on both IPLs.
ETSI
---------------------- Page: 7 ----------------------
8 ETSI EN 302 550-1-2 V1.1.1 (2010-02)
If modes 2, 2s, 3 or 4 of the IPL-MC [i.3] were used, the joint frame length of 432 ms is chosen for the IPL-MC frame
length.
4.2 The profile approach - different single carrier modes
To cope with different design constraints that arise from the possible use scenarios of the IPL-SC, two modes (denoted
mode 1 and mode 2) are defined which use a different share of pilots.
These modes are associated to profiles that are distinguished by their symbol rate and number of capacity units per
inserted preamble, so that their adaptation to different channel bandwidths is easily possible. Profile IPL-SC-A is
related to mode 1, and IPL-SC-B is related to mode 2, respectively.
For each profile, two examples are given.
To comply with the different profiles, profile IPL-SC-A needs to be capable to work with all symbol rates ranging from
3 Msps up to 12 Msps. A granularity (or step-size) of 88 ksps for the choice of symbol rates is provided in mode 1.
If compliance with profile IPL-SC-B is desired, symbol rates ranging from 1 Msps up to 3 Msps need to be supported.
A granularity (or step-size) of 5 ksps for the choice of symbol rates is provided in mode 2.
The main target frequency bands and channel bandwidths are:
Table 1: Different examples for the two profiles IPL-SC-A and IPL-SC-B
S-Band L-Band L-Band 1,84 Msps L-Band or S-Band
4,31 Msps 10,87 Msps 1,49 Msps
Profile name IPL-SC-A IPL-SC-A IPL-SC-B IPL-SC-B
Supported modes 1 1 2 2
Carrier frequency
2,0 GHz to 2,3 1,4 GHz to 1,5 1,4 GHz to 1,5 GHz 1,4 GHz to 1,5 GHz
GHz GHz 2,0 GHz to 2,3 GHz
Channel bandwidth 4,96 MHz 12,5 MHz 2,12 MHz 1,71 MHz
Symbol rate
4,31 Msps 10,87 Msps 1,84 Msps 1,49 Msps
min/max symbol rate 3 Msps/12 Msps 3 Msps / 12 Msps 1 Msps / 3 Msps 1 Msps / 3 Msps
IPL-SC frame length 432 ms 432 ms 432 ms 432 ms
The present document does not restrict its use to the application scenarios as denoted above. Other frequency bands or
channel bandwidths may be used but the parameter selection may not be optimal.
4.3 Generation of one Phy section
4.3.1 Overview
One Phy section consists of the following 3 parts:
• preamble;
• data payload (capacity units, CU, etc.);
• signalling bits (RFU: reserved for future use).
Insertion of preambles is different for mode 1 and mode 2, therefore the preamble insertion is distinguished within the
following clauses.
ETSI
---------------------- Page: 8 ----------------------
9 ETSI EN 302 550-1-2 V1.1.1 (2010-02)
4.3.1.1 Overview of mode 1
Figure 3 displays the generation of one Phy section in mode 1.
Figure 3: Overvie
...
Final draft ETSI EN 302 550-1-2 V1.1.0 (2009-12)
European Standard (Telecommunications series)
Satellite Earth Stations and Systems (SES);
Satellite Digital Radio (SDR) Systems;
Part 1: Physical Layer of the Radio Interface;
Sub-part 2: Inner Physical Layer Single Carrier Modulation
---------------------- Page: 1 ----------------------
2 Final draft ETSI EN 302 550-1-2 V1.1.0 (2009-12)
Reference
DEN/SES-00312-1-2
Keywords
digital, layer 1, radio, satellite
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2009.
All rights reserved.
TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
LTE™ is a Trade Mark of ETSI currently being registered
for the benefit of its Members and of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Final draft ETSI EN 302 550-1-2 V1.1.0 (2009-12)
Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
3 Definitions, symbols and abbreviations . 6
3.1 Definitions . 6
3.2 Symbols . 6
3.3 Abbreviations . 6
4 Inner physical layer - Single Carrier . 6
4.1 Interfacing to OPL (Outer Physical Layer) . 7
4.2 The profile approach - different single carrier modes . 8
4.3 Generation of one Phy section . 8
4.3.1 Overview . 8
4.3.1.1 Overview of mode 1 . 9
4.3.1.2 Overview of mode 2 . 10
4.3.2 IPL-SC signalling and padding . 10
4.3.3 Energy dispersal (scrambling) . 11
4.3.4 Preamble insertion . 11
4.3.4.1 Mode 1: Preamble choice . 11
4.3.4.2 Mode 2: Preamble choice . 12
4.4 Bit mapping to constellation . 13
4.4.1 QPSK Modulation . 13
4.4.2 8PSK Modulation . 13
4.4.3 16APSK Modulation. 14
4.5 Pulse shaping . 14
5 Parameter selection. 15
5.1 Example 1: profile IPL-SC-A: symbol rate of 4,31 Msps . 15
5.2 Example 2: profile IPL-SC-A: symbol rate of 10,87 Msps . 16
5.3 Example 3: profile IPL-SC-B: symbol rate of 1,84 Msps . 17
5.4 Example 4: profile IPL-SC-B: symbol rate of 1,49 Msps . 17
History . 18
ETSI
---------------------- Page: 3 ----------------------
4 Final draft ETSI EN 302 550-1-2 V1.1.0 (2009-12)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Satellite Earth
Stations and Systems (SES), and is now submitted for the Vote phase of the ETSI standards Two-step Approval
Procedure.
The present document is part 1, sub-part 2 of a multi-part deliverable. Full details of the entire series can be found in
part 1, sub-part 1 [i.4].
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 6 months after doa
Introduction
An SDR system enables broadcast to fixed and mobile receivers through satellites and complementary terrestrial
transmitters. Functionalities, architecture and technologies of such systems are described in TR 102 525 [i.5].
Several existing and planned ETSI standards specify parts of the SDR system, with the aim of interoperable
implementations. The physical layer of the radio interface (air interface) is divided up into the outer physical layer, the
inner physical layer with single carrier modulation, and the inner physical layer with multi carrier modulation. These
parts can be used all together in SDR compliant equipment, or in conjunction with other existing and future
specifications.
The present document specifies the inner physical layer with single carrier modulation. The inner physical layer with
multi carrier modulation is specified in EN 302 550-1-3 [i.3], and the outer physical layer in EN 305 550-1-1 [i.4].
Guidelines for using the physical layer standard can be found in TR 102 604 [i.6].
The physical layer specifications have previously been published as "Technical Specification (TS)" type ETSI
deliverables. The present document supersedes TS 102 551-1 [i.7] and is recommended for new implementations. The
functional difference between the previous TS 102 551-1 [i.7] and the present document is that the exclusion of the
IPL-MC Mode 1 is taken into account.
ETSI
---------------------- Page: 4 ----------------------
5 Final draft ETSI EN 302 550-1-2 V1.1.0 (2009-12)
1 Scope
The present document concerns the radio interface of SDR broadcast receivers. It specifies functionality of the inner
physical layer with single carrier modulation. It allows implementing this part of the system in an interoperable way.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
Not applicable.
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI EN 302 307 (V1.1.1): "Digital Video Broadcasting (DVB); Second generation framing
structure, channel coding and modulation systems for Broadcasting, Interactive Services, News
Gathering and other broadband satellite applications".
[i.2] ITU-T Recommendation O.153 (1992): "Basic parameters for the measurement of error
performance at bit rates below the primary rate".
[i.3] ETSI EN 302 550-1-3: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR)
Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 3: Inner Physical Layer Multi
Carrier Modulation".
[i.4] ETSI EN 302 550-1-1: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR)
Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 1: Outer Physical Layer".
[i.5] ETSI TR 102 525 (V1.1.1): "Satellite Earth Stations and Systems (SES); Satellite Digital Radio
(SDR) service; Functionalities, architecture and technologies".
[i.6] ETSI TR 102 604: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR)
Systems; Guidelines for the use of the physical layer standards".
ETSI
---------------------- Page: 5 ----------------------
6 Final draft ETSI EN 302 550-1-2 V1.1.0 (2009-12)
[i.7] ETSI TS 102 551-1 (V1.1.1): "Satellite Earth Stations and Systems (SES); Satellite Digital Radio
(SDR) Systems; Inner Physical Layer of the Radio Interface; Part 1: Single Carrier Transmission".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
floor function: function that rounds number down, towards zero, to the nearest integer
3.2 Symbols
For the purposes of the present document, the following symbols apply:
α roll off factor
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
16APSK 16 Amplitude and Phase Shift Keying
8PSK 8 Phase Shift Keying
BW BandWidth
C/N Carrier to Noise ratio
C-TS Channel Transport Stream
CU Capacity Unit
DVB Digital Video Broadcasting
I In-phase
IPL Inner Physical Layer
IPL-MC Inner Physical Layer, Multi Carrier
IPL-SC Inner Physical Layer, Single Carrier
ISI Inter Symbol Interference
ksps kilo symbols per second
LSB Least Significant Bit
MSB Most Significant Bit
Msps Mega symbols per second
OPL Outer Physical Layer
Q Quadrature
QPSK Quaternary Phase Shift Keying
RF Radio Frequency
RFU Reserved for Future Use
S-TS Service Transport Stream
4 Inner physical layer - Single Carrier
The functionality of the Inner Physical Layer (Single Carrier), in the following denoted IPL-SC, is to provide a robust
modulation scheme for single carrier transmissions. The single carrier modulation is mainly applicable to satellite signal
transmission but may be reused in other transmission environments. However, certain parameters are especially
designed and optimized for satellite requirements.
The IPL-SC is embedded between the OPL (C-TS delivery) and the RF frontend (modulation) as depicted in figure 1.
ETSI
---------------------- Page: 6 ----------------------
7 Final draft ETSI EN 302 550-1-2 V1.1.0 (2009-12)
Figure 1: General block diagram of the ETSI SES SDR system concept with selection of IPL-SC
The general block diagram of the IPL-SC functionality is given in figure 2. Please notify that the generation of each Phy
section can be handled individually (dashed box), whereas rolloff filtering is applied to the stream of mapped symbols
of many Phy section (due to its dispersive nature).
Figure 2: Block diagram of the ETSI SES SDR compliant IPL-SC
4.1 Interfacing to OPL (Outer Physical Layer)
Its interface to the OPL (Outer Physical Layer) is the C-TS (channel transport stream), which is defined in
EN 302 550-1-1 [i.4]. For this special IPL-SC, the parameters which are passed to the OPL are derived within
EN 302 550-1-1 [i.4].
This IPL-SC provides an input for only one single C-TS and generates the signal for one RF carrier. If more than one
carrier needs to be supported, multiple instances of the IPL-SC need to be instantiated in parallel.
The parameters that are passed to the OPL are as follows:
• frame length in integer number of CU (capacity units).
One IPL-SC frame is composed by a number of Phy sections. Their parameters are denoted in clause 5.
As different modes are distinguished (see clause 4.3), the interfacing to the OPL is also slightly different for the two
modes:
• For mode 1, it is mandatory to have integer numbers of CU which can be divided without remainder by 2 (for
QPSK), by 3 (for 8PSK) and by 4 (for 16APSK). Other numbers of CU lead to Phy sections that miss some
CU, and non-periodic preamble structure would be introduced.
• For mode 2, it is desirable to have integer numbers of CU which can be divided without remainder by 2 (for
QPSK), by 3 (for 8PSK) and by 4 (for 16APSK). Other numbers of CU lead to non-periodic preamble
structure for the different modulation orders.
Examples for a reasonable choice of parameters are given in clause 5.
With these parameters, the exact throughput of the IPL-SC can be derived in CU per time. The smallest unit to be
processed by the IPL-SC is one CU.
To be able to benefit from the gain of hybrid configurations (e.g. using IPL-SC together with IPL-MC), it is mandatory
to have equal frame lengths on both IPLs.
ETSI
---------------------- Page: 7 ----------------------
8 Final draft ETSI EN 302 550-1-2 V1.1.0 (2009-12)
If modes 2, 2s, 3 or 4 of the IPL-MC [i.3] were used, the joint frame length of 432 ms is chosen for the IPL-MC frame
length.
4.2 The profile approach - different single carrier modes
To cope with different design constraints that arise from the possible use scenarios of the IPL-SC, two modes (denoted
mode 1 and mode 2) are defined which use a different share of pilots.
These modes are associated to profiles that are distinguished by their symbol rate and number of capacity units per
inserted preamble, so that their adaptation to different channel bandwidths is easily possible. Profile IPL-SC-A is
related to mode 1, and IPL-SC-B is related to mode 2, respectively.
For each profile, two examples are given.
To comply with the different profiles, profile IPL-SC-A needs to be capable to work with all symbol rates ranging from
3 Msps up to 12 Msps. A granularity (or step-size) of 88 ksps for the choice of symbol rates is provided in mode 1.
If compliance with profile IPL-SC-B is desired, symbol rates ranging from 1 Msps up to 3 Msps need to be supported.
A granularity (or step-size) of 5 ksps for the choice of symbol rates is provided in mode 2.
The main target frequency bands and channel bandwidths are:
Table 1: Different examples for the two profiles IPL-SC-A and IPL-SC-B
S-Band L-Band L-Band 1,84 Msps L-Band or S-Band
4,31 Msps 10,87 Msps 1,49 Msps
Profile name IPL-SC-A IPL-SC-A IPL-SC-B IPL-SC-B
Supported modes 1 1 2 2
Carrier frequency
2,0 GHz to 2,3 1,4 GHz to 1,5 1,4 GHz to 1,5 GHz 1,4 GHz to 1,5 GHz
GHz GHz 2,0 GHz to 2,3 GHz
Channel bandwidth 4,96 MHz 12,5 MHz 2,12 MHz 1,71 MHz
Symbol rate
4,31 Msps 10,87 Msps 1,84 Msps 1,49 Msps
min/max symbol rate 3 Msps/12 Msps 3 Msps / 12 Msps 1 Msps / 3 Msps 1 Msps / 3 Msps
IPL-SC frame length 432 ms 432 ms 432 ms 432 ms
The present document does not restrict its use to the application scenarios as denoted above. Other frequency bands or
channel bandwidths may be used but the parameter selection may not be optimal.
4.3 Generation of one Phy section
4.3.1 Overview
One Phy section consists of the following 3 parts:
• preamble;
• data payload (capacity units, CU, etc.);
• signalling bits (RFU: reserved for future use).
Insertion of preambles is different for mode 1 and mode 2, therefore the preamble insertion is distinguished within the
following clauses.
ETSI
---------------------- Page: 8 ----------------------
9 Final draft ETSI EN 302 550-1-2 V1.1.0 (2009-12)
4.3.1.1 Overview of mode 1
Figure 3 displays the generation of one Phy section i
...
Draft ETSI EN 302 550-1-2 V1.1.0 (2009-07)
European Standard (Telecommunications series)
Satellite Earth Stations and Systems (SES);
Satellite Digital Radio (SDR) Systems;
Part 1: Physical Layer of the Radio Interface;
Sub-part 2: Inner Physical Layer Single Carrier Modulation
---------------------- Page: 1 ----------------------
2 Draft ETSI EN 302 550-1-2 V1.1.0 (2009-07)
Reference
DEN/SES-00312-1-2
Keywords
digital, layer 1, radio, satellite
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2009.
All rights reserved.
TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
LTE™ is a Trade Mark of ETSI currently being registered
for the benefit of its Members and of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Draft ETSI EN 302 550-1-2 V1.1.0 (2009-07)
Contents
Intellectual Property Rights . 4
Foreword . 4
Introduction . 4
1 Scope . 5
2 References . 5
2.1 Normative references . 5
2.2 Informative references . 5
3 Definitions, symbols and abbreviations . 6
3.1 Definitions . 6
3.2 Symbols . 6
3.3 Abbreviations . 6
4 Inner physical layer - Single Carrier . 6
4.1 Interfacing to OPL (Outer Physical Layer) . 7
4.2 The profile approach - different single carrier modes . 8
4.3 Generation of one Phy section . 8
4.3.1 Overview . 8
4.3.1.1 Overview of mode 1 . 9
4.3.1.2 Overview of mode 2 . 10
4.3.2 IPL-SC signalling and padding . 10
4.3.3 Energy dispersal (scrambling) . 11
4.3.4 Preamble insertion . 11
4.3.4.1 Mode 1: Preamble choice . 11
4.3.4.2 Mode 2: Preamble choice . 12
4.4 Bit mapping to constellation . 13
4.4.1 QPSK Modulation . 13
4.4.2 8PSK Modulation . 13
4.4.3 16APSK Modulation. 14
4.5 Pulse shaping . 14
5 Parameter selection. 15
5.1 Example 1: profile IPL-SC-A: symbol rate of 4,31 Msps . 15
5.2 Example 2: profile IPL-SC-A: symbol rate of 10,87 Msps . 16
5.3 Example 3: profile IPL-SC-B: symbol rate of 1,84 Msps . 17
5.4 Example 4: profile IPL-SC-B: symbol rate of 1,49 Msps . 17
History . 18
ETSI
---------------------- Page: 3 ----------------------
4 Draft ETSI EN 302 550-1-2 V1.1.0 (2009-07)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Satellite Earth
Stations and Systems (SES), and is now submitted for the Public Enquiry phase of the ETSI standards Two-step
Approval Procedure.
The present document is part 1, sub-part 2 of a multi-part deliverable. Full details of the entire series can be found in
part 1, sub-part 1 [i.4].
Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 6 months after doa
Introduction
An SDR system enables broadcast to fixed and mobile receivers through satellites and complementary terrestrial
transmitters. Functionalities, architecture and technologies of such systems are described in TR 102 525 [i.5].
Several existing and planned ETSI standards specify parts of the SDR system, with the aim of interoperable
implementations. The physical layer of the radio interface (air interface) is divided up into the outer physical layer, the
inner physical layer with single carrier modulation, and the inner physical layer with multi carrier modulation. These
parts can be used all together in SDR compliant equipment, or in conjunction with other existing and future
specifications.
The present document specifies the inner physical layer with single carrier modulation. The inner physical layer with
multi carrier modulation is specified in EN 302 550-1-3 [i.3], and the outer physical layer in EN 305 550-1-1 [i.4].
Guidelines for using the physical layer standard can be found in TR 102 604 [i.6].
The physical layer specifications have previously been published as "Technical Specification (TS)" type ETSI
deliverables. The present document supersedes TS 102 551-1 [i.7] and is recommended for new implementations. The
functional difference between the previous TS 102 551-1 [i.7] and the present document is that the exclusion of the
IPL-MC Mode 1 is taken into account.
ETSI
---------------------- Page: 4 ----------------------
5 Draft ETSI EN 302 550-1-2 V1.1.0 (2009-07)
1 Scope
The present document concerns the radio interface of SDR broadcast receivers. It specifies functionality of the inner
physical layer with single carrier modulation. It allows implementing this part of the system in an interoperable way.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
Not applicable.
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI EN 302 307 (V1.1.1): "Digital Video Broadcasting (DVB); Second generation framing
structure, channel coding and modulation systems for Broadcasting, Interactive Services, News
Gathering and other broadband satellite applications".
[i.2] ITU-T Recommendation O.153 (1992): "Basic parameters for the measurement of error
performance at bit rates below the primary rate".
[i.3] ETSI EN 302 550-1-3: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR)
Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 3: Inner Physical Layer Multi
Carrier Modulation".
[i.4] ETSI EN 302 550-1-1: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR)
Systems; Part 1: Physical Layer of the Radio Interface; Sub-part 1: Outer Physical Layer".
[i.5] ETSI TR 102 525 (V1.1.1): "Satellite Earth Stations and Systems (SES); Satellite Digital Radio
(SDR) service; Functionalities, architecture and technologies".
[i.6] ETSI TR 102 604: "Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR)
Systems; Guidelines for the use of the physical layer standards".
ETSI
---------------------- Page: 5 ----------------------
6 Draft ETSI EN 302 550-1-2 V1.1.0 (2009-07)
[i.7] ETSI TS 102 551-1 (V1.1.1): "Satellite Earth Stations and Systems (SES); Satellite Digital Radio
(SDR) Systems; Inner Physical Layer of the Radio Interface; Part 1: Single Carrier Transmission".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
floor function: function that rounds number down, towards zero, to the nearest integer
3.2 Symbols
For the purposes of the present document, the following symbols apply:
α roll off factor
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
16APSK 16 Amplitude and Phase Shift Keying
8PSK 8 Phase Shift Keying
BW BandWidth
C/N Carrier to Noise ratio
C-TS Channel Transport Stream
CU Capacity Unit
DVB Digital Video Broadcasting
I In-phase
IPL Inner Physical Layer
IPL-MC Inner Physical Layer, Multi Carrier
IPL-SC Inner Physical Layer, Single Carrier
ISI Inter Symbol Interference
ksps kilo symbols per second
LSB Least Significant Bit
MSB Most Significant Bit
Msps Mega symbols per second
OPL Outer Physical Layer
Q Quadrature
QPSK Quaternary Phase Shift Keying
RF Radio Frequency
RFU Reserved for Future Use
S-TS Service Transport Stream
4 Inner physical layer - Single Carrier
The functionality of the Inner Physical Layer (Single Carrier), in the following denoted IPL-SC, is to provide a robust
modulation scheme for single carrier transmissions. The single carrier modulation is mainly applicable to satellite signal
transmission but may be reused in other transmission environments. However, certain parameters are especially
designed and optimized for satellite requirements.
The IPL-SC is embedded between the OPL (C-TS delivery) and the RF frontend (modulation) as depicted in figure 1.
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7 Draft ETSI EN 302 550-1-2 V1.1.0 (2009-07)
Figure 1: General block diagram of the ETSI SES SDR system concept with selection of IPL-SC
The general block diagram of the IPL-SC functionality is given in figure 2. Please notify that the generation of each Phy
section can be handled individually (dashed box), whereas rolloff filtering is applied to the stream of mapped symbols
of many Phy section (due to its dispersive nature).
Figure 2: Block diagram of the ETSI SES SDR compliant IPL-SC
4.1 Interfacing to OPL (Outer Physical Layer)
Its interface to the OPL (Outer Physical Layer) is the C-TS (channel transport stream), which is defined in
EN 302 550-1-1 [i.4]. For this special IPL-SC, the parameters which are passed to the OPL are derived within
EN 302 550-1-1 [i.4].
This IPL-SC provides an input for only one single C-TS and generates the signal for one RF carrier. If more than one
carrier needs to be supported, multiple instances of the IPL-SC need to be instantiated in parallel.
The parameters that are passed to the OPL are as follows:
• frame length in integer number of CU (capacity units).
One IPL-SC frame is composed by a number of Phy sections. Their parameters are denoted in clause 5.
As different modes are distinguished (see clause 4.3), the interfacing to the OPL is also slightly different for the two
modes:
• For mode 1, it is mandatory to have integer numbers of CU which can be divided without remainder by 2 (for
QPSK), by 3 (for 8PSK) and by 4 (for 16APSK). Other numbers of CU lead to Phy sections that miss some
CU, and non-periodic preamble structure would be introduced.
• For mode 2, it is desirable to have integer numbers of CU which can be divided without remainder by 2 (for
QPSK), by 3 (for 8PSK) and by 4 (for 16APSK). Other numbers of CU lead to non-periodic preamble
structure for the different modulation orders.
Examples for a reasonable choice of parameters are given in clause 5.
With these parameters, the exact throughput of the IPL-SC can be derived in CU per time. The smallest unit to be
processed by the IPL-SC is one CU.
To be able to benefit from the gain of hybrid configurations (e.g. using IPL-SC together with IPL-MC), it is mandatory
to have equal frame lengths on both IPLs.
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If modes 2, 2s, 3 or 4 of the IPL-MC [i.3] were used, the joint frame length of 432 ms is chosen for the IPL-MC frame
length.
4.2 The profile approach - different single carrier modes
To cope with different design constraints that arise from the possible use scenarios of the IPL-SC, two modes (denoted
mode 1 and mode 2) are defined which use a different share of pilots.
These modes are associated to profiles that are distinguished by their symbol rate and number of capacity units per
inserted preamble, so that their adaptation to different channel bandwidths is easily possible. Profile IPL-SC-A is
related to mode 1, and IPL-SC-B is related to mode 2, respectively.
For each profile, two examples are given.
To comply with the different profiles, profile IPL-SC-A needs to be capable to work with all symbol rates ranging from
3 Msps up to 12 Msps. A granularity (or step-size) of 88 ksps for the choice of symbol rates is provided in mode 1.
If compliance with profile IPL-SC-B is desired, symbol rates ranging from 1 Msps up to 3 Msps need to be supported.
A granularity (or step-size) of 5 ksps for the choice of symbol rates is provided in mode 2.
The main target frequency bands and channel bandwidths are:
Table 1: Different examples for the two profiles IPL-SC-A and IPL-SC-B
S-Band L-Band L-Band 1,84 Msps L-Band or S-Band
4,31 Msps 10,87 Msps 1,49 Msps
Profile name IPL-SC-A IPL-SC-A IPL-SC-B IPL-SC-B
Supported modes 1 1 2 2
Carrier frequency
2,0 GHz to 2,3 1,4 GHz to 1,5 1,4 GHz to 1,5 GHz 1,4 GHz to 1,5 GHz
GHz GHz 2,0 GHz to 2,3 GHz
Channel bandwidth 4,96 MHz 12,5 MHz 2,12 MHz 1,71 MHz
Symbol rate
4,31 Msps 10,87 Msps 1,84 Msps 1,49 Msps
min/max symbol rate 3 Msps/12 Msps 3 Msps / 12 Msps 1 Msps / 3 Msps 1 Msps / 3 Msps
IPL-SC frame length 432 ms 432 ms 432 ms 432 ms
The present document does not restrict its use to the application scenarios as denoted above. Other frequency bands or
channel bandwidths may be used but the parameter selection may not be optimal.
4.3 Generation of one Phy section
4.3.1 Overview
One Phy section consists of the following 3 parts:
• preamble;
• data payload (capacity units, CU, etc.);
• signalling bits (RFU: reserved for future use).
Insertion of preambles is different for mode 1 and mode 2, therefore the preamble insertion is distinguished within the
following clauses.
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