ETSI EN 301 841-3 V2.1.1 (2016-09)
VHF air-ground Digital Link (VDL) Mode 2; Technical characteristics and methods of measurement for ground-based equipment; Part 3: Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU
VHF air-ground Digital Link (VDL) Mode 2; Technical characteristics and methods of measurement for ground-based equipment; Part 3: Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU
REN/ERM-TGAERO-34
Digitalna povezava VHF zrak-tla, 2. način - Tehnične karakteristike in merilne metode za talno opremo - 3. del: Harmonizirani standard, ki zajema bistvene zahteve člena 3.2 direktive 2014/53/EU
Ta dokument se uporablja za opremo za digitalno povezavo VHF zrak-tla (VDL), 2. način, digitalnih komunikacij, ki uporabljajo diferencialno osemfazno premično šifriranje (D8PSK), namenjeno za kanalne priraste 25 kHz. Sistem digitalne povezave VHF zrak-tla, 2. način, omogoča izmenjavo podatkovne komunikacije med letalskim plovilom in talnimi sistemi ter deluje v frekvenčnem pasu VHF (od 117,975 MHz do 137,000 MHz).
Področje uporabe tega dokumenta je omejeno na talne postaje.
OPOMBA: Sistem digitalne povezave VHF zrak-tla, 2. način, je mogoče uporabljati kot podomrežje zrak/tla aeronavtičnega telekomunikacijskega omrežja (ATN), ki uporablja pas z dodeljevanjem spektra AM(R)S.
Ta dokument vsebuje zahteve, s katerimi se dokazuje, da »... mora biti radijska oprema sestavljena tako, da učinkovito uporablja in tudi podpira učinkovito rabo radijskega spektra z namenom preprečevanja škodljivih motenj« [i.1].
Poleg tega dokumenta se za opremo na področju uporabe tega dokumenta uporabljajo tudi drugi standardi EN, ki določajo tehnične zahteve v zvezi z bistvenimi zahtevami iz drugih delov člena 3 direktive 2014/53/EU [i.1], ter tudi bistvene zahteve iz uredbe o interoperabilnosti enotnega evropskega neba št. 552/2004 [i.5] in zadevna izvedbena pravila in/ali bistvene zahteve iz uredbe EASA št. 216/2008 [i.6], kakor je bila spremenjena z uredbo št. 1108/2009 [i.7].
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VHF air-ground Digital Link (VDL) Mode 2 - Technical characteristics and methods of measurement for ground-based equipment - Part 3: Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU33.060.99Druga oprema za radijske komunikacijeOther equipment for radiocommunicationsICS:Ta slovenski standard je istoveten z:ETSI EN 301 841-3 V2.1.1 (2016-09)SIST EN 301 841-3 V2.1.1:2016en01-november-2016SIST EN 301 841-3 V2.1.1:2016SLOVENSKI
STANDARD
SIST EN 301 841-3 V2.1.1:2016
ETSI EN 301 841-3 V2.1.1 (2016-09) VHF air-ground Digital Link (VDL) Mode 2; Technical characteristics and methods of measurement for ground-based equipment; Part 3: Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU
HARMONISED EUROPEAN STANDARD SIST EN 301 841-3 V2.1.1:2016
ETSI ETSI EN 301 841-3 V2.1.1 (2016-09) 2
Reference REN/ERM-TGAERO-34 Keywords aeronautical, AM, DSB, harmonised standard, radio, testing, VHF 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 The present document can be downloaded from: http://www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (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 https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please send your comment to one of the following services: https://portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2016. All rights reserved.
DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE™ are Trade Marks of ETSI 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 301 841-3 V2.1.1:2016
ETSI ETSI EN 301 841-3 V2.1.1 (2016-09) 3 Contents Intellectual Property Rights . 5 Foreword . 5 Modal verbs terminology . 5 1 Scope . 6 2 References . 6 2.1 Normative references . 6 2.2 Informative references . 6 3 Definitions and abbreviations . 7 3.1 Definitions . 7 3.2 Abbreviations . 8 4 Technical requirements specifications . 8 4.1 Environmental profile . 8 4.2 Conformance requirements . 9 4.2.1 Transmitter requirements . 9 4.2.1.1 Frequency error . 9 4.2.1.1.1 Requirement . 9 4.2.1.1.2 Conformance . 9 4.2.1.2 Manufacturer's declared output power . 9 4.2.1.2.1 Requirement . 9 4.2.1.2.2 Conformance . 9 4.2.1.3 Adjacent channel power . 9 4.2.1.3.1 Requirement . 9 4.2.1.3.2 Conformance . 9 4.2.1.4 Transmitter Conducted spurious emissions . 9 4.2.1.4.1 Requirement . 9 4.2.1.4.2 Conformance . 9 4.2.1.5 Transmitter Cabinet radiation. 9 4.2.1.5.1 Requirement . 9 4.2.1.5.2 Conformance . 9 4.2.1.6 Void. 10 4.2.1.7 Intermodulation attenuation . 10 4.2.1.7.1 Requirements . 10 4.2.1.7.2 Conformance . 10 4.2.1.8 Void. 10 4.2.1.9 RF power release time . 10 4.2.1.9.1 Requirement . 10 4.2.1.9.2 Conformance . 10 4.2.1.10 Transient behaviour of the transmitter . 10 4.2.1.10.1 Receiver to transmitter turn-around time . 10 4.2.1.10.2 Transmitter to receiver turn-around time . 10 4.2.1.11 Modulation Accuracy - Symbol constellation error . 10 4.2.1.11.1 Requirement . 10 4.2.1.11.2 Conformance . 11 4.2.1.12 Load VSWR capability . 11 4.2.1.12.1 Requirement . 11 4.2.1.12.2 Conformance . 11 4.2.2 Receiver requirements . 11 4.2.2.1 Sensitivity . 11 4.2.2.1.1 Requirement . 11 4.2.2.1.2 Conformance . 11 4.2.2.2 Co-channel interference . 11 4.2.2.2.1 Requirement . 11 4.2.2.2.2 Conformance . 11 4.2.2.3 First adjacent channel rejection . 11 SIST EN 301 841-3 V2.1.1:2016
ETSI ETSI EN 301 841-3 V2.1.1 (2016-09) 4 4.2.2.3.1 Requirement . 11 4.2.2.3.2 Conformance . 11 4.2.2.4 Spurious response rejection of signals within the VHF aeronautical band . 11 4.2.2.4.1 Requirement . 11 4.2.2.4.2 Conformance . 12 4.2.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 12 4.2.2.5.1 Requirement . 12 4.2.2.5.2 Conformance . 12 4.2.2.6 In-band Intermodulation response rejection . 12 4.2.2.6.1 Requirement . 12 4.2.2.6.2 Conformance . 12 4.2.2.7 Blocking or desensitization . 12 4.2.2.7.1 Requirement . 12 4.2.2.7.2 Conformance . 12 4.2.2.8 Receiver Conducted spurious emission . 12 4.2.2.8.1 Requirement . 12 4.2.2.8.2 Conformance . 12 4.2.2.9 Receiver Cabinet radiation . 12 4.2.2.9.1 Requirement . 12 4.2.2.9.2 Conformance . 12 5 Testing for compliance with technical requirements . 13 5.1 Environmental conditions for testing . 13 5.1.0 General . 13 5.1.1 Test power source . 13 5.1.2 Normal and extreme test conditions. 13 5.2 Interpretation of the measurement results . 13 5.3 Conformance tests . 14 5.3.1 Transmitter test specifications . 14 5.3.1.1 Frequency error . 14 5.3.1.2 Manufacturer's declared output power . 14 5.3.1.3 Adjacent channel power . 14 5.3.1.4 Conducted Spurious emissions . 14 5.3.1.5 Cabinet Radiation . 14 5.3.1.6 Void. 14 5.3.1.7 Inter-modulation attenuation . 15 5.3.1.8 Void. 15 5.3.1.9 RF power release time . 15 5.3.1.10 Transient behaviour of the transmitter . 15 5.3.1.10.1 Receiver to transmitter turn-around time . 15 5.3.1.10.2 Transmitter to receiver turn-around time . 15 5.3.1.11 Modulation accuracy - Symbol constellation error . 15 5.3.1.12 Load VSWR capability . 15 5.3.2 Receiver test specifications . 15 5.3.2.1 Sensitivity . 15 5.3.2.2 Co-channel interference . 15 5.3.2.3 First Adjacent channel rejection . 15 5.3.2.4 Spurious response rejection of signals within the VHF aeronautical band . 15 5.3.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 15 5.3.2.6 In-band Intermodulation rejection . 15 5.3.2.7 Blocking or desensitization . 15 5.3.2.8 Conducted spurious emission . 16 5.3.2.9 Cabinet Radiation . 16 Annex A (normative): Relationship between the present document and the essential requirements of Directive 2014/53/EU . 17 Annex B (informative): Bibliography . 19 History . 20
SIST EN 301 841-3 V2.1.1:2016
ETSI ETSI EN 301 841-3 V2.1.1 (2016-09) 5 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 (https://ipr.etsi.org/). 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 Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.4] to provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC [i.1]. Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated EFTA regulations.
The present document is part 3 of a multi-part deliverable covering VHF air-ground Digital Link (VDL) Mode 2; Technical characteristics and methods of measurement for ground-based equipment, as identified below: Part 1: "Physical layer and MAC sub-layer"; Part 2: "Upper layers"; Part 3: "Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU".
National transposition dates Date of adoption of this EN: 13 September 2016 Date of latest announcement of this EN (doa): 31 December 2016 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
30 June 2017 Date of withdrawal of any conflicting National Standard (dow): 30 June 2018
Modal verbs terminology In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and "cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). "must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation. SIST EN 301 841-3 V2.1.1:2016
ETSI ETSI EN 301 841-3 V2.1.1 (2016-09) 6 1 Scope The present document applies to VDL Mode 2 ground-air digital communications using Differential Eight Phase Shift Keying (D8PSK), intended for channel increments of 25 kHz. The VDL Mode 2 system provides data communication exchanges between aircraft and ground-based systems, operating in the VHF band (117,975 MHz to 137,000 MHz). The scope of the present document is limited to ground based stations. NOTE: The VDL Mode 2 can be used as an Air/Ground sub-network of the Aeronautical Telecommunication Network (ATN) using a band with AM(R)S spectrum allocation. The present document contains requirements to demonstrate that ". Radio equipment shall be so constructed that it both effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference" [i.1]. In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of article 3 of the Directive 2014/53/EU [i.1] as well as essential requirements under the SES Interoperability Regulation No 552/2004 [i.5] and related implementing rules and/or essential requirements under the EASA basic Regulation No 216/2008 [i.6] as amended by Regulation No 1108/2009 [i.7] may apply to equipment within the scope of the present document. 2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. 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. The following referenced documents are necessary for the application of the present document. [1] ETSI EN 301 841-1 (V1.4.1) (04-2015): "VHF air-ground Digital Link (VDL) Mode 2; Technical characteristics and methods of measurement for ground-based equipment; Part 1: Physical layer and MAC sub-layer". [2] ETSI EN 300 113-1 (V1.7.1) (11-2011): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Land mobile service; Radio equipment intended for the transmission of data (and/or speech) using constant or non-constant envelope modulation and having an antenna connector; Part 1: Technical characteristics and methods of measurement". 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. [i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC. SIST EN 301 841-3 V2.1.1:2016
ETSI ETSI EN 301 841-3 V2.1.1 (2016-09) 7 [i.2] ETSI TR 100 028-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics; Part 1". [i.3] ETSI TR 100 028-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics; Part 2". [i.4] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request to the European Committee for Electrotechnical Standardisation and to the European Telecommunications Standards Institute as regards radio equipment in support of Directive 2014/53/EU of the European Parliament and of the Council. [i.5] Regulation (EC) No 552/2004 of the European Parliament and of the Council of 10 March 2004 on the interoperability of the European Air Traffic Management network (interoperability Regulation), OJ L 96, 31.03.2004, p. 26 as amended by Regulation (EC) No 1070/2009, OJ L 300, 14.11.2009, p. 34. [i.6] Regulation (EC) No 216/2008 of the European Parliament and of the Council of 20 February 2008 on common rules in the field of civil aviation and establishing a European Aviation Safety Agency, and repealing Council Directive 91/670/EEC, Regulation (EC) No 1592/2002 and Directive 2004/36/EC. [i.7] Regulation (EC) No 1108/2009 of the European Parliament and of the Council of 21 October 2009 amending Regulation (EC) No 216/2008 in the field of aerodromes, air traffic management and air navigation services and repealing Directive 2006/23/EC. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in Directive 2014/53/EU [i.1] and the following apply: adjacent channel power: amount of the modulated RF signal power transmitted outside of the assigned channel NOTE: Adjacent channel power includes discrete spurious, signal sidebands, and noise density (including phase noise) at the transmitter output. adjacent channel rejection: receiver's ability to demodulate the desired signal and meet the uncorrected BER requirement in the presence of an interfering signal in an adjacent channel NOTE: The ratio (in dB) between the adjacent interfering signal level and the desired signal level necessary to achieve the specified minimum uncorrected BER, is the Adjacent Channel Rejection (ACR) ratio. Aeronautical Mobile Service (AMS): mobile service between ground based stations and airborne stations, or between aircraft stations, in which survival craft stations may participate average transmitter output power: average power supplied to the antenna transmission line by a transmitter during an interval of time sufficiently long, compared with the lowest frequency encountered in the modulation, taken under normal operating conditions Bit Error Rate (BER): ratio between the number of erroneous bits received and the total number of bits received NOTE: The uncorrected BER represents the BER without the benefit of Forward Error Correction (FEC). Co-Channel Interference (CCI): capability of a receiver to demodulate the desired signal and achieve the minimum specified BER performance in the presence of an unwanted signal at the same assigned channel NOTE: The ratio (in dB) between the wanted signal level and the un
...
ETSI EN 301 841-3 V2.1.1 (2016-09)
HARMONISED EUROPEAN STANDARD
VHF air-ground Digital Link (VDL) Mode 2;
Technical characteristics and methods of measurement
for ground-based equipment;
Part 3: Harmonised Standard covering the essential
requirements of article 3.2 of the Directive 2014/53/EU
---------------------- Page: 1 ----------------------
2 ETSI EN 301 841-3 V2.1.1 (2016-09)
Reference
REN/ERM-TGAERO-34
Keywords
aeronautical, AM, DSB, harmonised standard,
radio, testing, VHF
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
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (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
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2016.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI 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 301 841-3 V2.1.1 (2016-09)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 8
4 Technical requirements specifications . 8
4.1 Environmental profile . 8
4.2 Conformance requirements . 9
4.2.1 Transmitter requirements . 9
4.2.1.1 Frequency error . 9
4.2.1.1.1 Requirement . 9
4.2.1.1.2 Conformance . 9
4.2.1.2 Manufacturer's declared output power . 9
4.2.1.2.1 Requirement . 9
4.2.1.2.2 Conformance . 9
4.2.1.3 Adjacent channel power . 9
4.2.1.3.1 Requirement . 9
4.2.1.3.2 Conformance . 9
4.2.1.4 Transmitter Conducted spurious emissions . 9
4.2.1.4.1 Requirement . 9
4.2.1.4.2 Conformance . 9
4.2.1.5 Transmitter Cabinet radiation. 9
4.2.1.5.1 Requirement . 9
4.2.1.5.2 Conformance . 9
4.2.1.6 Void. 10
4.2.1.7 Intermodulation attenuation . 10
4.2.1.7.1 Requirements . 10
4.2.1.7.2 Conformance . 10
4.2.1.8 Void. 10
4.2.1.9 RF power release time . 10
4.2.1.9.1 Requirement . 10
4.2.1.9.2 Conformance . 10
4.2.1.10 Transient behaviour of the transmitter . 10
4.2.1.10.1 Receiver to transmitter turn-around time . 10
4.2.1.10.2 Transmitter to receiver turn-around time . 10
4.2.1.11 Modulation Accuracy - Symbol constellation error . 10
4.2.1.11.1 Requirement . 10
4.2.1.11.2 Conformance . 11
4.2.1.12 Load VSWR capability . 11
4.2.1.12.1 Requirement . 11
4.2.1.12.2 Conformance . 11
4.2.2 Receiver requirements . 11
4.2.2.1 Sensitivity . 11
4.2.2.1.1 Requirement . 11
4.2.2.1.2 Conformance . 11
4.2.2.2 Co-channel interference . 11
4.2.2.2.1 Requirement . 11
4.2.2.2.2 Conformance . 11
4.2.2.3 First adjacent channel rejection . 11
ETSI
---------------------- Page: 3 ----------------------
4 ETSI EN 301 841-3 V2.1.1 (2016-09)
4.2.2.3.1 Requirement . 11
4.2.2.3.2 Conformance . 11
4.2.2.4 Spurious response rejection of signals within the VHF aeronautical band . 11
4.2.2.4.1 Requirement . 11
4.2.2.4.2 Conformance . 12
4.2.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 12
4.2.2.5.1 Requirement . 12
4.2.2.5.2 Conformance . 12
4.2.2.6 In-band Intermodulation response rejection . 12
4.2.2.6.1 Requirement . 12
4.2.2.6.2 Conformance . 12
4.2.2.7 Blocking or desensitization . 12
4.2.2.7.1 Requirement . 12
4.2.2.7.2 Conformance . 12
4.2.2.8 Receiver Conducted spurious emission . 12
4.2.2.8.1 Requirement . 12
4.2.2.8.2 Conformance . 12
4.2.2.9 Receiver Cabinet radiation . 12
4.2.2.9.1 Requirement . 12
4.2.2.9.2 Conformance . 12
5 Testing for compliance with technical requirements . 13
5.1 Environmental conditions for testing . 13
5.1.0 General . 13
5.1.1 Test power source . 13
5.1.2 Normal and extreme test conditions. 13
5.2 Interpretation of the measurement results . 13
5.3 Conformance tests . 14
5.3.1 Transmitter test specifications . 14
5.3.1.1 Frequency error . 14
5.3.1.2 Manufacturer's declared output power . 14
5.3.1.3 Adjacent channel power . 14
5.3.1.4 Conducted Spurious emissions . 14
5.3.1.5 Cabinet Radiation . 14
5.3.1.6 Void. 14
5.3.1.7 Inter-modulation attenuation . 15
5.3.1.8 Void. 15
5.3.1.9 RF power release time . 15
5.3.1.10 Transient behaviour of the transmitter . 15
5.3.1.10.1 Receiver to transmitter turn-around time . 15
5.3.1.10.2 Transmitter to receiver turn-around time . 15
5.3.1.11 Modulation accuracy - Symbol constellation error . 15
5.3.1.12 Load VSWR capability . 15
5.3.2 Receiver test specifications . 15
5.3.2.1 Sensitivity . 15
5.3.2.2 Co-channel interference . 15
5.3.2.3 First Adjacent channel rejection . 15
5.3.2.4 Spurious response rejection of signals within the VHF aeronautical band . 15
5.3.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 15
5.3.2.6 In-band Intermodulation rejection . 15
5.3.2.7 Blocking or desensitization . 15
5.3.2.8 Conducted spurious emission . 16
5.3.2.9 Cabinet Radiation . 16
Annex A (normative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 17
Annex B (informative): Bibliography . 19
History . 20
ETSI
---------------------- Page: 4 ----------------------
5 ETSI EN 301 841-3 V2.1.1 (2016-09)
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 (https://ipr.etsi.org/).
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 Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.4] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
The present document is part 3 of a multi-part deliverable covering VHF air-ground Digital Link (VDL) Mode 2;
Technical characteristics and methods of measurement for ground-based equipment, as identified below:
Part 1: "Physical layer and MAC sub-layer";
Part 2: "Upper layers";
Part 3: "Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU".
National transposition dates
Date of adoption of this EN: 13 September 2016
Date of latest announcement of this EN (doa): 31 December 2016
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 June 2017
Date of withdrawal of any conflicting National Standard (dow): 30 June 2018
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
---------------------- Page: 5 ----------------------
6 ETSI EN 301 841-3 V2.1.1 (2016-09)
1 Scope
The present document applies to VDL Mode 2 ground-air digital communications using Differential Eight Phase Shift
Keying (D8PSK), intended for channel increments of 25 kHz. The VDL Mode 2 system provides data communication
exchanges between aircraft and ground-based systems, operating in the VHF band (117,975 MHz to 137,000 MHz).
The scope of the present document is limited to ground based stations.
NOTE: The VDL Mode 2 can be used as an Air/Ground sub-network of the Aeronautical Telecommunication
Network (ATN) using a band with AM(R)S spectrum allocation.
The present document contains requirements to demonstrate that ". Radio equipment shall be so constructed that it
both effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference" [i.1].
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the Directive 2014/53/EU [i.1] as well as essential requirements under the SES
Interoperability Regulation No 552/2004 [i.5] and related implementing rules and/or essential requirements under the
EASA basic Regulation No 216/2008 [i.6] as amended by Regulation No 1108/2009 [i.7] may apply to equipment
within the scope of the present document.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
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.
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 301 841-1 (V1.4.1) (04-2015): "VHF air-ground Digital Link (VDL) Mode 2; Technical
characteristics and methods of measurement for ground-based equipment; Part 1: Physical layer
and MAC sub-layer".
[2] ETSI EN 300 113-1 (V1.7.1) (11-2011): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); Land mobile service; Radio equipment intended for the transmission of data
(and/or speech) using constant or non-constant envelope modulation and having an antenna
connector; Part 1: Technical characteristics and methods of measurement".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
ETSI
---------------------- Page: 6 ----------------------
7 ETSI EN 301 841-3 V2.1.1 (2016-09)
[i.2] ETSI TR 100 028-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics; Part 1".
[i.3] ETSI TR 100 028-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics; Part 2".
[i.4] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.5] Regulation (EC) No 552/2004 of the European Parliament and of the Council of 10 March 2004 on
the interoperability of the European Air Traffic Management network (interoperability
Regulation), OJ L 96, 31.03.2004, p. 26 as amended by Regulation (EC) No 1070/2009, OJ L 300,
14.11.2009, p. 34.
[i.6] Regulation (EC) No 216/2008 of the European Parliament and of the Council of 20 February 2008
on common rules in the field of civil aviation and establishing a European Aviation Safety
Agency, and repealing Council Directive 91/670/EEC, Regulation (EC) No 1592/2002 and
Directive 2004/36/EC.
[i.7] Regulation (EC) No 1108/2009 of the European Parliament and of the Council of 21 October 2009
amending Regulation (EC) No 216/2008 in the field of aerodromes, air traffic management and air
navigation services and repealing Directive 2006/23/EC.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in Directive 2014/53/EU [i.1] and the
following apply:
adjacent channel power: amount of the modulated RF signal power transmitted outside of the assigned channel
NOTE: Adjacent channel power includes discrete spurious, signal sidebands, and noise density (including phase
noise) at the transmitter output.
adjacent channel rejection: receiver's ability to demodulate the desired signal and meet the uncorrected BER
requirement in the presence of an interfering signal in an adjacent channel
NOTE: The ratio (in dB) between the adjacent interfering signal level and the desired signal level necessary to
achieve the specified minimum uncorrected BER, is the Adjacent Channel Rejection (ACR) ratio.
Aeronautical Mobile Service (AMS): mobile service between ground based stations and airborne stations, or between
aircraft stations, in which survival craft stations may participate
average transmitter output power: average power supplied to the antenna transmission line by a transmitter during an
interval of time sufficiently long, compared with the lowest frequency encountered in the modulation, taken under
normal operating conditions
Bit Error Rate (BER): ratio between the number of erroneous bits received and the total number of bits received
NOTE: The uncorrected BER represents the BER without the benefit of Forward Error Correction (FEC).
Co-Channel Interference (CCI): capability of a receiver to demodulate the desired signal and achieve the minimum
specified BER performance in the presence of an unwanted signal at the same assigned channel
NOTE: The ratio (in dB) between the wanted signal level and the unwanted signal level is the co-channel
interference ratio.
conducted measurements: measurements which are made using a direct RF connection to the equipment und
...
Draft ETSI EN 301 841-3 V2.1.0 (2016-06)
HARMONISED EUROPEAN STANDARD
VHF air-ground Digital Link (VDL) Mode 2;
Technical characteristics and methods of measurement
for ground-based equipment;
Part 3: Harmonised Standard covering the essential
requirements of article 3.2 of the Directive 2014/53/EU
---------------------- Page: 1 ----------------------
2 Draft ETSI EN 301 841-3 V2.1.0 (2016-06)
Reference
REN/ERM-TGAERO-34
Keywords
aeronautical, AM, DSB, harmonised standard,
radio, testing, VHF
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GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Draft ETSI EN 301 841-3 V2.1.0 (2016-06)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 8
4 Technical requirements specifications . 8
4.1 Environmental profile . 8
4.2 Conformance requirements . 9
4.2.1 Transmitter requirements . 9
4.2.1.1 Frequency error . 9
4.2.1.1.1 Requirement . 9
4.2.1.1.2 Conformance . 9
4.2.1.2 Manufacturer's declared output power . 9
4.2.1.2.1 Requirement . 9
4.2.1.2.2 Conformance . 9
4.2.1.3 Adjacent channel power . 9
4.2.1.3.1 Requirement . 9
4.2.1.3.2 Conformance . 9
4.2.1.4 Conducted spurious emissions . 9
4.2.1.4.1 Requirement . 9
4.2.1.4.2 Conformance . 9
4.2.1.5 Cabinet radiation . 9
4.2.1.5.1 Requirement . 9
4.2.1.5.2 Conformance . 9
4.2.1.6 Void. 10
4.2.1.7 Intermodulation attenuation . 10
4.2.1.7.1 Requirements . 10
4.2.1.7.2 Conformance . 10
4.2.1.8 Void. 10
4.2.1.9 RF power release time . 10
4.2.1.9.1 Requirement . 10
4.2.1.9.2 Conformance . 10
4.2.1.10 Transient behaviour of the transmitter . 10
4.2.1.10.1 Receiver to transmitter turn-around time . 10
4.2.1.10.2 Transmitter to receiver turn-around time . 10
4.2.1.11 Modulation Accuracy - Symbol constellation error . 10
4.2.1.11.1 Requirement . 10
4.2.1.11.2 Conformance . 11
4.2.1.12 Load VSWR capability . 11
4.2.1.12.1 Requirement . 11
4.2.1.12.2 Conformance . 11
4.2.2 Receiver requirements . 11
4.2.2.1 Sensitivity . 11
4.2.2.1.1 Requirement . 11
4.2.2.1.2 Conformance . 11
4.2.2.2 Co-channel interference . 11
4.2.2.2.1 Requirement . 11
4.2.2.2.2 Conformance . 11
4.2.2.3 First adjacent channel rejection . 11
ETSI
---------------------- Page: 3 ----------------------
4 Draft ETSI EN 301 841-3 V2.1.0 (2016-06)
4.2.2.3.1 Requirement . 11
4.2.2.3.2 Conformance . 11
4.2.2.4 Spurious response rejection of signals within the VHF aeronautical band . 11
4.2.2.4.1 Requirement . 11
4.2.2.4.2 Conformance . 12
4.2.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 12
4.2.2.5.1 Requirement . 12
4.2.2.5.2 Conformance . 12
4.2.2.6 In-band Intermodulation response rejection . 12
4.2.2.6.1 Requirement . 12
4.2.2.6.2 Conformance . 12
4.2.2.7 Blocking or desensitization . 12
4.2.2.7.1 Requirement . 12
4.2.2.7.2 Conformance . 12
4.2.2.8 Conducted spurious emission . 12
4.2.2.8.1 Requirement . 12
4.2.2.8.2 Conformance . 12
4.2.2.9 Cabinet radiation . 12
4.2.2.9.1 Requirement . 12
4.2.2.9.2 Conformance . 12
5 Testing for compliance with technical requirements . 13
5.1 Environmental conditions for testing . 13
5.1.0 General . 13
5.1.1 Test power source . 13
5.1.2 Normal and extreme test conditions. 13
5.2 Interpretation of the measurement results . 13
5.3 Conformance tests . 14
5.3.1 Transmitter test specifications . 14
5.3.1.1 Frequency error . 14
5.3.1.2 Manufacturer's declared output power . 14
5.3.1.3 Adjacent channel power . 14
5.3.1.4 Conducted Spurious emissions . 14
5.3.1.5 Cabinet Radiation . 14
5.3.1.6 Void. 15
5.3.1.7 Inter-modulation attenuation . 15
5.3.1.8 Void. 15
5.3.1.9 RF power release time . 15
5.3.1.10 Transient behaviour of the transmitter . 15
5.3.1.10.1 Receiver to transmitter turn-around time . 15
5.3.1.10.2 Transmitter to receiver turn-around time . 15
5.3.1.11 Modulation accuracy - Symbol constellation error . 15
5.3.1.12 Load VSWR capability . 15
5.3.2 Receiver test specifications . 15
5.3.2.1 Sensitivity . 15
5.3.2.2 Co-channel interference . 15
5.3.2.3 First Adjacent channel rejection . 15
5.3.2.4 Spurious response rejection of signals within the VHF aeronautical band . 15
5.3.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 15
5.3.2.6 In-band Intermodulation rejection . 15
5.3.2.7 Blocking or desensitization . 16
5.3.2.8 Conducted spurious emission . 16
5.3.2.9 Cabinet Radiation . 16
Annex A (normative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 17
Annex B (informative): Bibliography . 19
History . 20
ETSI
---------------------- Page: 4 ----------------------
5 Draft ETSI EN 301 841-3 V2.1.0 (2016-06)
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 (https://ipr.etsi.org/).
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 draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote
phase of the ETSI standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.4] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
The present document is part 3 of a multi-part deliverable covering VHF air-ground Digital Link (VDL) Mode 2;
Technical characteristics and methods of measurement for ground-based equipment, as identified below:
Part 1: "Physical layer and MAC sub-layer";
Part 2: "Upper layers";
Part 3: "Harmonised Standard covering the essential requirements of article 3.2 of the Directive
2014/53/EU".
Proposed National transposition dates
Date of latest announcement of this EN (doa): 3 months
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months
Date of withdrawal of any conflicting National Standard (dow): 18 months
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
---------------------- Page: 5 ----------------------
6 Draft ETSI EN 301 841-3 V2.1.0 (2016-06)
1 Scope
The present document applies to VDL Mode 2 ground-air digital communications using Differential Eight Phase Shift
Keying (D8PSK), intended for channel increments of 25 kHz. The VDL Mode 2 system provides data communication
exchanges between aircraft and ground-based systems, operating in the VHF band (117,975 MHz to 137,000 MHz).
The scope of the present document is limited to ground based stations.
NOTE: The VDL Mode 2 can be used as an Air/Ground sub-network of the Aeronautical Telecommunication
Network (ATN) using a band with AM(R)S spectrum allocation.
The present document contains requirements to demonstrate that ". Radio equipment shall be so constructed that it
both effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference" [i.1].
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the Directive 2014/53/EU [i.1] as well as essential requirements under the SES
Interoperability Regulation No 552/2004 [i.5] and related implementing rules and/or essential requirements under the
EASA basic Regulation No 216/2008 [i.6] as amended by Regulation No 1108/2009 [i.7] may apply to equipment
within the scope of the present document.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
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.
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 301 841-1 (V1.4.1) (04-2015): "VHF air-ground Digital Link (VDL) Mode 2; Technical
characteristics and methods of measurement for ground-based equipment; Part 1: Physical layer
and MAC sub-layer".
[2] ETSI EN 300 113-1 (V1.7.1) (11-2011): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); Land mobile service; Radio equipment intended for the transmission of data
(and/or speech) using constant or non-constant envelope modulation and having an antenna
connector; Part 1: Technical characteristics and methods of measurement".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
ETSI
---------------------- Page: 6 ----------------------
7 Draft ETSI EN 301 841-3 V2.1.0 (2016-06)
[i.2] ETSI TR 100 028-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics; Part 1".
[i.3] ETSI TR 100 028-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics; Part 2".
[i.4] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
[i.5] Regulation (EC) No 552/2004 of the European Parliament and of the Council of 10 March 2004 on
the interoperability of the European Air Traffic Management network (interoperability
Regulation), OJ L 96, 31.03.2004, p. 26 as amended by Regulation (EC) No 1070/2009, OJ L 300,
14.11.2009, p. 34.
[i.6] Regulation (EC) No 216/2008 of the European Parliament and of the Council of 20 February 2008
on common rules in the field of civil aviation and establishing a European Aviation Safety
Agency, and repealing Council Directive 91/670/EEC, Regulation (EC) No 1592/2002 and
Directive 2004/36/EC.
[i.7] Regulation (EC) No 1108/2009 of the European Parliament and of the Council of 21 October 2009
amending Regulation (EC) No 216/2008 in the field of aerodromes, air traffic management and air
navigation services and repealing Directive 2006/23/EC.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in Directive 2014/53/EU [i.1] and the
following apply:
adjacent channel power: amount of the modulated RF signal power transmitted outside of the assigned channel
NOTE: Adjacent channel power includes discrete spurious, signal sidebands, and noise density (including phase
noise) at the transmitter output.
adjacent channel rejection: receiver's ability to demodulate the desired signal and meet the uncorrected BER
requirement in the presence of an interfering signal in an adjacent channel
NOTE: The ratio (in dB) between the adjacent interfering signal level and the desired signal level necessary to
achieve the specified minimum uncorrected BER, is the Adjacent Channel Rejection (ACR) ratio.
Aeronautical Mobile Service (AMS): mobile service between ground based stations and airborne stations, or between
aircraft stations, in which survival craft stations may participate
average transmitter output power: average power supplied to the antenna transmission line by a transmitter during an
interval of time sufficiently long, compared with the lowest frequency encountered in the modulation, taken under
normal operating conditions
Bit Error Rate (BER): ratio between the number of erroneous bits received and the total number of bits received
NOTE: The uncorrected BER represents the BER without the benefit of Forward Error Correction (FEC).
Co-Channel Interference (CCI): capability of a receiver to demodulate the desired signal and achieve the minimum
specified BER performance in the presence of an unwanted signal at the same assigned channel
NOTE: The ratio (in dB) between the wanted signal level and the unwanted signal level is the co-ch
...
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