ETSI EN 301 277 V1.2.1 (2001-02)

Fixed Radio Systems; Point-to-point equipment; High capacity digital radio systems transmitting STM-4 or 4 x STM-1 in a 40 MHz radio frequency channel using Co-Channel Dual Polarized (CCDP) operation

REN/TM-04111-01

Fiksni radijski sistemi – Oprema tipa točka-točka – Visoko zmogljivi digitalni radijski sistemi, ki oddajajo STM-4 ali 4 x STM-1 v radiofrekvenčnem kanalu 40 MHz in uporabljajo dvojno polarizacijo prek sosednjega kanala (CCDP)

General Information

• Status: Published
• Publication Date: 12-Feb-2001
• Technical Committee: TM 4 - TM Fixed Radio Systems
• Current Stage: 13 - TB decision to make document historical
• Completion Date: 10-May-2007
• Ref Project: SIST EN 301 277 V1.2.1:2003 - Fixed Radio Systems; Point-to-point equipment; High capacity digital radio systems transmitting STM-4 or 4 x STM-1 in a 40 MHz radio frequency channel using Co-Channel Dual Polarized (CCDP) operation

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 301 277 V1.2.1:2003
01-december-2003
)LNVQLUDGLMVNLVLVWHPL±2SUHPDWLSDWRþNDWRþND±9LVRNR]PRJOMLYLGLJLWDOQL
UDGLMVNLVLVWHPLNLRGGDMDMR670DOL[670YUDGLRIUHNYHQþQHPNDQDOX
0+]LQXSRUDEOMDMRGYRMQRSRODUL]DFLMRSUHNVRVHGQMHJDNDQDOD&&'3
Fixed Radio Systems; Point-to-point equipment; High capacity digital radio systems
transmitting STM-4 or 4 x STM-1 in a 40 MHz radio frequency channel using Co-Channel
Dual Polarized (CCDP) operation
Ta slovenski standard je istoveten z: EN 301 277 Version 1.2.1
ICS:
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
SIST EN 301 277 V1.2.1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 301 277 V1.2.1:2003

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SIST EN 301 277 V1.2.1:2003
ETSI EN 301 277 V1.2.1 (2001-02)
European Standard (Telecommunications series)
Fixed Radio Systems;
Point-to-point equipment;
High capacity digital radio systems transmitting STM-4
or 4 x STM-1 in a 40 MHz radio frequency channel using
Co-Channel Dual Polarized (CCDP) operation

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SIST EN 301 277 V1.2.1:2003
2 ETSI EN 301 277 V1.2.1 (2001-02)
Reference
REN/TM-04111-01
Keywords
digital, DRRS, radio, SDH, STM, transmission,
point-to-point
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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 2001.
All rights reserved.
ETSI

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SIST EN 301 277 V1.2.1:2003
3 ETSI EN 301 277 V1.2.1 (2001-02)
Contents
Intellectual Property Rights .5
Foreword.5
1 Scope.6
2 References.6
3 Symbols and abbreviations.8
3.1 Symbols . 8
3.2 Abbreviations. 9
4 General characteristics .9
4.1 Frequency bands and channel arrangements. 9
4.2 Modes of operation. 10
4.3 Compatibility requirements. 10
4.4 Performance and availability requirements. 10
4.5 Environmental conditions. 10
4.5.1 Equipment within weather protected locations (indoor locations) . 10
4.5.2 Equipment for non-weather protected locations (outdoor locations). 10
4.6 Mechanical dimensions . 10
4.7 Power supply. 11
4.8 Electromagnetic Compatibility (EMC). 11
4.9 TMN interfaces . 11
4.10 Block diagram. 11
4.11 Branching / feeder / antenna requirements. 12
4.11.1 Antenna radiation pattern . 12
4.11.2 Antenna cross-polar discrimination . 12
5 SDH baseband characteristics .12
6 Transmitter characteristics .12
6.1 Output power . 12
6.2 Automatic Transmit Power control (ATPC) . 13
6.3 Remote Transmit Power Control (RTPC). 13
6.4 RF spectrum masks . 14
6.5 Discrete CW lines exceeding the spectrum mask limit. 16
6.5.1 Spectral lines at the symbol rate . 16
6.5.2 Other spectral lines . 16
6.6 Spurious emissions. 17
6.6.1 Spurious emissions-External . 17
6.6.2 Spurious emissions-Internal. 17
6.7 Radio frequency tolerance . 17
6.8 Return loss . 18
6.9 Intermodulation products. 18
7 Receiver characteristics.18
7.1 Local oscillator frequency tolerance. 18
7.2 Receiver image rejection . 18
7.3 Spurious emissions. 18
7.3.1 Spurious emissions-External . 18
7.3.2 Spurious emissions-Internal. 18
7.4 Input level range. 18
7.5 Return loss . 19
8 System performance without diversity .19
8.1 Equipment background BER. 19
8.2 BER as a function of receive input level (dBm). 19
8.3 Interference sensitivity . 20
8.3.1 Co-channel "external" interference sensitivity. 20
ETSI

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SIST EN 301 277 V1.2.1:2003
4 ETSI EN 301 277 V1.2.1 (2001-02)
8.3.2 Adjacent channel interference sensitivity. 21
8.4 Distortion sensitivity . 21
8.5 Sensitivity to dynamic fading. 21
9 System characteristics with diversity.22
9.1 Differential delay compensation . 22
9.2 BER performance. 22
9.3 Interference sensitivity . 22
9.4 Distortion sensitivity . 22
10 Cross polar interference sensitivity.23
10.1 Co-channel "internal" interference sensitivity in flat fading conditions . 23
10.2 Co-channel "internal" interference sensitivity in dispersive fading conditions. 23
Annex A (informative): Additional information .24
A.1 ATPC .24
A.2 Branching, feeder and antenna .24
A.2.1 Antenna radiation pattern envelopes . 24
A.2.2 Cross-polar discrimination (XPD). 24
A.2.3 Interport isolation. 24
A.2.4 Feeder / antenna return loss . 24
A.3 Compatibility.25
A.4 Mechanical requirements .25
Annex B (informative): Bibliography.26
History .27
ETSI

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SIST EN 301 277 V1.2.1:2003
5 ETSI EN 301 277 V1.2.1 (2001-02)
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://www.etsi.org/ipr).
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 Transmission
and Multiplexing (TM).
The former title of the present document was: "Transmission and Multiplexing (TM); Digital Radio Relay Systems
(DRRS); High capacity DRRS transmitting STM-4 or 4 x STM-1 in a 40 MHz radio frequency channel using
Co-Channel Dual Polarized (CCDP) operation".
National transposition dates
Date of adoption of this EN: 9 February 2001
Date of latest announcement of this EN (doa): 31 May 2001
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 November 2001
Date of withdrawal of any conflicting National Standard (dow): 30 November 2001
ETSI

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SIST EN 301 277 V1.2.1:2003
6 ETSI EN 301 277 V1.2.1 (2001-02)
1 Scope
The present document defines technical parameters for a high capacity Digital Radio Relay System (DRRS) operating
in frequency bands with 40 MHz channel spacing e.g. the 4 GHz, 5 GHz, U 6 GHz and 11 GHz bands. The capacity
should be STM-4 or 4 × STM-1 per 40 MHz RF-channel by using both polarizations in the co-channel dual polarized
(CCDP) mode of operation.
The area of application of these DRRS is foreseen to be in regional and trunk networks forming part of a SDH-network
including STM-4 rings.
Systems considered in the present document should be able to respect ITU-R high grade performance objectives.
The systems considered should operate in these networks having regard for existing hop length, which are considered to
be normally up to about 30 km to 40 km for regional and about 60 km for trunk networks, respectively. Hop lengths
greater than this latter length are used in special applications.
For information about compatibility with other systems see clause A.3.
The parameters specified fall into two categories:
a) Those that are required to provide compatibility between channels from different sources of equipment on the
same route connected to separate antennas.
NOTE: Equipment supplied by different manufacturers on the same path or existing radio-relay systems operate
on different frequencies.
b) Parameters defining the transmission quality of the proposed system.
The standardization deals with baseband and RF characteristics relevant to SDH. Antenna/feeder system requirements
are also considered.
Baseband interfaces have to be considered for STM-1 signals and STM-4 signals in accordance with
ITU-T Recommendations G.707 [6] and G.957 [21] respectively.
2 References
The following documents contain provisions, which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, subsequent revisions do apply.
[1] ITU-R Recommendation F.384-6 (1995): "Radio-frequency channel arrangements for medium and
high capacity analogue or digital radio-relay systems operating in the upper 6 GHz band".
[2] ITU-R Recommendation F.387-7 (1995): "Radio-frequency channel arrangements for radio-relay
systems operating in the 11 GHz band".
[3] ITU-R Recommendation F.635-4 (1997): "Radio-frequency channel arrangements based on a
homogeneous pattern for radio-relay systems operating in the 4 GHz band".
[4] ITU-R Recommendation F.750-3 (1997): "Architectures and functional aspects of radio-relay
systems for SDH-based networks".
[5] ITU-R Recommendation F.1099-2 (1997): "Radio-frequency channel arrangements for
high-capacity digital radio-relay systems in the 5 GHz (4 400 MHz to 5 000 MHz) band".
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SIST EN 301 277 V1.2.1:2003
7 ETSI EN 301 277 V1.2.1 (2001-02)
[6] ITU-T Recommendation G.707 (1996): "Network node interface for the synchronous digital
hierarchy (SDH)".
[7] ITU-R Recommendation SM.329-7 (1997): "Spurious Emissions".
[8] ITU-T Recommendation G.773 (1993): "Protocol suites for Q-interfaces for management of
transmission systems".
[9] ITU-T Recommendation G.784 (1999): "Synchronous digital hierarchy (SDH) management".
[10] ETSI ETS 300 019 (all parts): "Equipment engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment".
[11] ETSI ETS 300 119 (all parts): "Equipment engineering (EE); European telecommunication
standard for equipment practice".
[12] ETSI EN 300 385: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
ElectroMagnetic Compatibility (EMC) standard for fixed radio links and ancillary equipment".
[13] ETSI ETS 300 132 (all parts): "Equipment Engineering (EE); Power supply interface at the input
to telecommunications equipment".
[14] ETSI ETS 300 635: "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy
(SDH); Radio specific functional blocks for transmission of M x STM-N".
[15] ETSI EN 300 833: "Fixed Radio Systems; Point to Point Antennas; Antennas for point-to-point
fixed radio systems operating in the frequency band 3 GHz to 60 GHz".
[16] ITU-T Recommendation G.703 (1991): "Physical/electrical characteristics of hierarchical digital
interfaces".
[17] ITU-R Recommendation F.1191-1 (1997): "Bandwidths and unwanted emissions of digital
radio-relay systems".
[18] ITU-T Recommendation O.151 (1992): "Error performance measuring equipment operating at the
primary rate and above".
[19] ITU-T Recommendation O.181 (1996): "Equipment to assess error performance on STM-N
interfaces".
[20] ITU-T Recommendation G.783 (1997): "Characteristics of synchronous digital hierarchy (SDH)
equipment functional blocks".
[21] ITU-T Recommendation G.957 (1995): "Optical interfaces for equipments and systems relating to
the synchronous digital hierarchy".
[22] ETSI TR 101 035: "Transmission and Multiplexing (TM); Synchronous Digital Hierarchy (SDH)
aspects regarding Digital Radio Relay Systems (DRRS)".
[23] ITU-R Recommendation F.695 (1990): "Availability objectives for real digital radio-relay links
forming part of a high-grade circuit within an integrated services digital network".
[24] ITU-R Recommendation F.1092-1 (1997): "Error performance objectives for constant bit rate
digital path at or above the primary rate carried by digital radio-relay systems which may form part
of the international portion of a 27 500 km hypothetical reference path".
[25] ITU-R Recommendation F.1189-1 (1997): "Error performance objectives for constant bit rate
digital paths at or above the primary rate carried by digital radio-relay systems which may form
part or all of the national portion of a 27 500 km hypothetical reference path".
[26] ITU-R Recommendation F.557-4 (1997): "Availability objective for radio-relay systems over a
hypothetical reference circuit and a hypothetical reference digital path".
[27] ITU-T Recommendation G.826 (1996): "Error performance parameters and objectives for
international, constant bit rate digital paths at or above the primary rate".
ETSI

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SIST EN 301 277 V1.2.1:2003
8 ETSI EN 301 277 V1.2.1 (2001-02)
[28] ITU-T Recommendation G.827 (1996): "Availability parameters and objectives for path elements
of international constant bit-rate digital paths at or above the primary rate".
[29] ITU-R Recommendation F.752-1 (1994): "Diversity techniques for radio-relay systems".
[30] ITU-R Recommendation F.1093-1 (1997): "Effects of multipath propagation on the design and
operation of line-of-sight digital radio-relay systems".
[31] ITU-R Recommendation F.1101 (1994): "Characteristics of digital radio-relay systems below
about 17 GHz".
[32] ETSI EN 301 127: "Fixed Radio Systems; Point-to-point equipment; High capacity digital radio
systems carrying SDH signals (2 x STM-1) in frequency bands with about 30 MHz channel
spacing and using Co-Channel Dual Polarized (CCDP) operation".
[33] CEPT/ERC Recommendation 12-08: "Harmonized radio frequency channel arrangements and
block allocations for low, medium and high capacity systems in the band 3 600 MHz to
4 200 MHz".
[34] CEPT/ERC Recommendation 14-02: "Radio-frequency channel arrangements for medium and
high capacity analogue or high capacity digital radio-relay systems operating in the band
6 425 MHz to 7 125 MHz".
[35] CEPT/ERC Recommendation 12-06: "Harmonized radio frequency channel arrangements for
digital terrestrial fixed systems operating in the band 10,7 GHz to 11,7 GHz".
[36] ETSI ETR 019: "Transmission and Multiplexing (TM); Specification of new generation
high-capacity digital radio systems carrying 2 x STM-1 Synchronous Digital Hierarchy (SDH)
signals in frequency bands with 40 MHz channel spacing".
[37] ETSI TR 101 127: "Transmission and Multiplexing (TM); Digital Radio Relay Systems (DRRS);
Synchronous Digital Hierarchy (SDH); High capacity DRRS carrying SDH signals (1 x STM-1) in
frequency bands with about 30 MHz channel spacing and using Co-Channel Dual Polarized
(CCDP) operation".
[38] CEPT/ERC Recommendation 74-01: "Spurious emissions".
3 Symbols and abbreviations
3.1 Symbols
For the purposes of the present document, the following symbols apply:
dB decibel
dBm decibel relative to 1 mW
GHz GigaHertz
km kilometre
Mbit/s Mega-bit per second
MHz MegaHertz
m/s metres per second
ppm parts per million
ns nanosecond
2
W/m Watts per square metre
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SIST EN 301 277 V1.2.1:2003
9 ETSI EN 301 277 V1.2.1 (2001-02)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ATPC Automatic Transmit Power Control
BER Bit Error Rate
C/I Carrier to Interference ratio
CCDP Co-Channel Dual Polarized
CSmin minimum practical Channel Separation (for a given radio-frequency channel arrangement)
IF Intermediate Frequency
NFD Net Filter Discrimination
PDH Plesiochronous Digital Hierarchy
QAM Quadrature Amplitude Modulation
RCSOH Radio Complementary Sectra OverHeat
RF Radio Frequency
RFCOH Radio Frame Complementary OverHeat
RX Receiver
SDH Synchronous Digital Hierarchy
SOH Section OverHead
STM-1 Synchronous Transport Module Level 1 (155,52 Mbit/s)
STM-4 Synchronous Transport Module Level 4 (622 Mbit/s)
TMN Telecommunication Management Network
TX Transmitter
U6 Upper 6 (GHz frequency band)
XIF Cross polarization improvement factor due to XPIC operation
XPD Cross Polar Discrimination
XPI Cross Polar Interference
XPIC Cross Polar Interference Canceller
4 General characteristics
4.1 Frequency bands and channel arrangements
The system shall be required to operate in the following frequency bands, according to the specified CEPT and
ITU-R Recommendations on the quoted channel spacings.
4GHz
CEPT/ERC Recommendation 12-08 [33], annex A, Part 1 with 40 MHz channel spacing ITU-T
Recommendation G.826 [27] and ITU-R Recommendation F.635-4 [3] with 40 MHz channel spacing. The centre gap
between transmitters and receivers in ITU-R Recommendation F.635-4 [3] is 80 MHz.
5GHz
ITU-R Recommendation F.1099-2 [5] with 40 MHz channel spacing. The centre gap between transmitters and receivers
in ITU-R Recommendation F.1099-2 [5] is 60 MHz.
U6GHz
CEPT/ERC Recommendation 14-02 [34] and ITU-R Recommendation F.384-6 [1] with 40 MHz channel spacing. The
centre gap between transmitters and receivers in ITU-R Recommendation F.384-6 [1] is 60 MHz.
11 GHz
CEPT/ERC Recommendation 12-06 [35] and ITU-R Recommendation F.387-7 [2] with 40 MHz channel spacing. The
centre gap between transmitters and receivers in ITU-R Recommendation F.387-7 [2] is 130 MHz.
ETSI

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SIST EN 301 277 V1.2.1:2003
10 ETSI EN 301 277 V1.2.1 (2001-02)
4.2 Modes of operation
The mode of operation should be Co-Channel Dual Polarized (CCDP) for all frequency bands up to and including
11 GHz.
In defining system characteristics of CCDP systems, the additional losses introduced by branching networks shall be
taken into account. Depending on the implementation (split branching for even and odd channels followed by a 3 dB
loss hybrid put at reference point C and/or C', narrow band RF filters concept or others) additional losses ranging from
3 dB to 6 dB shall be considered in evaluating the available net system gain.
When narrow-band RF filters are used losses affect directly receiver thresholds at reference point B. As a consequence
this shall be taken into account in specifying receiver threshold limits.
4.3 Compatibility requirements
There shall be no requirement to operate transmitting equipment from one manufacturer with receiving equipment from
another.
4.4 Performance and availability requirements
Equipment shall be designed in order to meet network performance and availability requirements foreseen by
ITU-R Recommendations F.695 [23], F.1092-1 [24], F.1189-1 [25] and F.557-4 [26] following the criteria defined in
ITU-T Recommendations G.826 [27] and G.827 [28] for the international or national portion of the digital path.
The implication of the link design on the performance is recognized and the general design criteria reported in
ITU-R Recommendations F.752-1 [29], F.1093-1 [30], F.1101 [31], F.1092-1 [24] and F.1189-1 [25] are to be applied.
4.5 Environmental conditions
The equipment shall be required to meet the environmental conditions set out in ETS 300 019 [10] which defines
weather protected and non-weather protected locations, classes and test severity.
The manufacturer shall state which class the equipment is designed to withstand.
4.5.1 Equipment within weather protected locations (indoor locations)
The equipment intended for operation within temperature controlled locations or partially temperature controlled
locations shall meet the requirements of ETS 300 019 [10] subclasses 3.1 and 3.2 respectively.
Optionally, the more stringent requirements of ETS 300 019 [10] subclasses 3.3 (non-temperature controlled locations),
3.4 (sites with heat trap) and 3.5 (sheltered locations) may be applied.
4.5.2 Equipment for non-weather protected locations (outdoor locations)
Equipment intended for operation within non-weather protected locations shall meet the requirements of
ETS 300 019 [10] class 4.1 or 4.1E.
Class 4.1 applies to many European countries and class 4.1E applies to all European countries.
For systems supplied within a specific radio cabinet which gives full protection against precipitation, wind, etc. the
ETS 300 019 [10] subclasses 3.3, 3.4 and 3.5 may be applied also for equipment intended for operation in non-weather
protected locations.
4.6 Mechanical dimensions
SeeclauseA.4.
ETSI

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SIST EN 301 277 V1.2.1:2003
11 ETSI EN 301 277 V1.2.1 (2001-02)
4.7 Power supply
The power supply interface shall be in accordance with the characteristics of one or more of the secondary voltages
foreseen in ETS 300 132 [13].
4.8 Electromagnetic Compatibility (EMC)
Fixed
...