1、 ETSI ES 202 239 V1.1.1 (2003-10)ETSI Standard Electromagnetic compatibilityand Radio spectrum Matters (ERM);Wireless digital video links operating above 1,3 GHz;Specification of typical receiver performance parametersfor spectrum planningETSI ETSI ES 202 239 V1.1.1 (2003-10) 2 Reference DES/ERM-TG1
2、7WG4-007 Keywords digital, radio, receiver, video 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 but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important noti
3、ce 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
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5、 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, send your comment to: editoretsi.org Copyright Notification No part may be reproduced except as authorized by written permission. The copyright
6、and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2003. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand the TIPHON logo are Trade Marks currently being
7、registered by ETSI 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. ETSI ETSI ES 202 239 V1.1.1 (2003-10) 3 Contents Intellectual Property Rights4 Foreword.4 1 Scope 5 2 References 5 3 Definitions and ab
8、breviations.5 3.1 Definitions5 3.2 Abbreviations .6 4 Receiver performance parameters 6 4.1 Introduction 6 4.2 Applicability overview.6 4.3 Receiver parameter definitions.6 4.3.1 Rx sensitivity 6 4.3.2 Blocking or desensitization.6 4.3.3 Adjacent channel selectivity .6 4.4 Reference values.7 4.4.1 D
9、VB-T COFDM systems .7 5 Recommended methods of measurement.7 5.1 Test conditions .7 5.1.1 Normal test conditions 7 5.1.1.1 Normal temperature and humidity 7 5.1.1.2 Normal power source 8 5.1.1.2.1 Mains voltage 8 5.1.1.2.2 Lead-acid battery power sources used on vehicles8 5.1.1.2.3 Other power sourc
10、es 8 5.1.2 Normal modulation.8 5.2 Test arrangements.8 5.3 Minimum Rx sensitivity.8 5.3.1 Method of measurement .8 5.4 Blocking or desensitization 9 5.5 Adjacent channel selectivity.9 5.5.1 General9 5.5.2 Method of measurement .9 6 Interpretation of measurement results 10 Annex A (informative): Bibl
11、iography.11 History 12 ETSI ETSI ES 202 239 V1.1.1 (2003-10) 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-membe
12、rs, 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.a
13、sp). 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 pr
14、esent document. Foreword This ETSI Standard (ES) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). ETSI ETSI ES 202 239 V1.1.1 (2003-10) 5 1 Scope The present document applies to wireless video links equipment operating above 1,3 GHz. The p
15、resent document specifies the reference receiver performance parameters, not covered by EN 302 064-1 1, which are required for the purpose of spectrum planning and methods of investigation including resolving interference issues. These parameters play an important role in the frequency planning and
16、the respective compatibility analysis performed by responsible national administrations. The present document should be regarded as a living document and is intended to be updated in the light of new developments and innovation. Manufacturers are encouraged to provide receiver parameters of their pr
17、oducts for inclusion within future revisions. It is hoped that by this method typical values can be provided for each proposed modulation system. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References a
18、re 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. For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in
19、the expected location might be found at http:/docbox.etsi.org/Reference. 1 ETSI EN 302 064-1: “Electromagnetic compatibility and Radio spectrum Matters (ERM); Wireless Video Links (WVL) operating in the 1,3 GHz to 50 GHz frequency band; Part 1: Technical characteristics and methods of measurement“.
20、2 ETSI TR 100 028 (all parts): “Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions a
21、pply: frequency range: range of operating frequencies over which the equipment can be adjusted operating frequency: nominal frequency at which the equipment can be operated; this is also referred to as the operating centre frequency Quasi-Error-Free (QEF): (DVB-T) is defined as BER 2 10-4after Viter
22、bi decoding, which virtually eliminates errors following the Reed-Solomon decoder ETSI ETSI ES 202 239 V1.1.1 (2003-10) 6 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: BER Bit Error Rate COFDM Coded Orthogonal Frequency Division Multiplex DVB-T Digita
23、l Video Broadcast Terrestrial FER Frame Error Rate QEF Quasi-Error-Free RF Radio Frequency Rx Receiver 4 Receiver performance parameters 4.1 Introduction The purpose of the present document is to provide additional information on receiver performance parameters which are not included in a product ha
24、rmonized standard. This additional information can be used for spectrum planning, methods of investigation and resolving interference issues. 4.2 Applicability overview Table 1 indicates the parameters which are considered applicable for the various technologies that are covered by the present docum
25、ent. Table 1 will be periodically updated in line with the knowledge of new modulation schemes and corresponding receiver parameters. Table 1: Applicability overview System Rx sensitivity Blocking or desensitization Adjacent channel selectivity DVB-T COFDM Yes Yes Yes 4.3 Receiver parameter definiti
26、ons 4.3.1 Rx sensitivity The receiver sensitivity is the minimum power level at the receiver RF input produced by a carrier at the nominal frequency of the receiver, modulated with the normal modulation (clause 5.1.2) which will, without interference, produce after demodulation a data signal with ei
27、ther a specified Bit Error Rate (BER) or a Frame Error Rate (FER). 4.3.2 Blocking or desensitization Blocking is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal outside the wanted band at
28、 frequencies other than those of the spurious responses declared. 4.3.3 Adjacent channel selectivity The adjacent channel selectivity is a measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted signal th
29、at differs in frequency from the wanted signal by an amount equal to the adjacent channel separation for which the equipment is intended. For digital video links based on COFDM, the adjacent channel is entered 5 MHz, 10 MHz or 20 MHz away depending on the declared bandwidth. ETSI ETSI ES 202 239 V1.
30、1.1 (2003-10) 7 4.4 Reference values 4.4.1 DVB-T COFDM systems The minimum receiver sensitivity shall not be less than the reference values as stated in table 2. The blocking level, for any frequency within the specified ranges, shall be better than the values given in table 2, except at frequencies
31、 on which spurious responses are found. The adjacent channel selectivity shall not be less than the values as stated in table 2. Table 2: Reference values Modulation Code rate QEF (note) Receiver sensitivity QPSK 1/2 3,1 -93 dBm QPSK 2/3 4,9 -91 dBmQPSK 3/4 5,9 -90 dBm QPSK 5/6 6,9 -89 dBmQPSK 7/8 7
32、,7 -88 dBm 16-QAM 1/2 8,8 -87 dBm 16-QAM 2/3 11,1 -85 dBm 16-QAM 3/4 12,5 -84 dBm 16-QAM 5/6 13,5 -83 dBm 16-QAM 7/8 13,9 -82 dBm 64-QAM 1/2 14,4 -82 dBm 64-QAM 2/3 16,5 -80 dBm 64-QAM 3/4 18,0 -78 dBm 64-QAM 5/6 19,3 -77 dBm 64-QAM 7/8 20,1 -76 dBm Blocking (All modes) 40 dB Adjacent channel select
33、ivity 30 dB NOTE: Required C/N in a Gaussian channel for BER = 2E-4 after Viterbi, QEF after Reed-Solomon 5 Recommended methods of measurement 5.1 Test conditions All tests described in the present document need only be performed under normal test conditions. 5.1.1 Normal test conditions 5.1.1.1 Nor
34、mal temperature and humidity The normal temperature and humidity conditions for tests shall be any convenient combination of temperature and humidity within the following ranges: - temperature: +15C to +35C; - relative humidity: 20 % to 75 %. ETSI ETSI ES 202 239 V1.1.1 (2003-10) 8 5.1.1.2 Normal po
35、wer source 5.1.1.2.1 Mains voltage The normal test voltage for equipment to be connected to the mains shall be the nominal mains voltage. For the purpose of the present document, the nominal voltage shall be the voltage(s) for which the equipment was designed. The frequency of the test power source
36、corresponding to the AC mains shall be between 49 Hz and 51 Hz. 5.1.1.2.2 Lead-acid battery power sources used on vehicles When radio equipment is intended for operation from the usual, alternator fed lead-acid battery power source used on vehicles, then the normal test voltage shall be 1,1 times th
37、e nominal voltage of the battery. 5.1.1.2.3 Other power sources For operation from other power sources or types of battery (primary or secondary), the nominal test voltage shall be as stated by the equipment manufacturer. 5.1.2 Normal modulation The manufacturer shall describe the modulation to be u
38、sed by the signal generator(s) during the measurements described in the present document. This modulation should be representative of normal use of the equipment. The same modulation shall be used for all measurements on the same equipment. 5.2 Test arrangements Radiated RF power measurements are im
39、precise and therefore conducted measurements are recommended. Equipment used for testing may be provided with a suitable connector for conducted RF measurements. Where this is not possible, a suitable test fixture shall be used. Alternatively, radiated measurements shall be performed. Plug-in radio
40、devices may be tested together with a suitable test jig and/or typical host equipment. 5.3 Minimum Rx sensitivity 5.3.1 Method of measurement The measurement procedure shall be as follows: a) an input signal with a frequency equal to the nominal frequency (20 ppm) of the receiver, using normal modul
41、ation (clause 5.1.2), shall be applied to the receiver input; b) depending on the type of system, the bit pattern of the modulating signal or the frame packets shall be compared to those obtained from the receiver after demodulation to calculate the Bit Error Rate (BER), or the Frame Error Rate (FER
42、) in case the frame packets contain means for detecting frame errors; c) the level of the input signal to the receiver is adjusted until the stated maximum Bit Error Ratio (BER) or Frame Error Rate (FER) is met; d) the maximum usable sensitivity is the mean level of the input signal to the receiver.
43、 The minimum receiver sensitivity may vary with the data rate. Therefore the above procedure may need to be repeated for the different data rates of the equipment. ETSI ETSI ES 202 239 V1.1.1 (2003-10) 9 5.4 Blocking or desensitization This measurement method can be used for all types of equipment s
44、pecified in table 1. Two signal generators A and B shall be connected to the receiver via a combining network, either: a) via a test fixture to the integrated or dedicated receiver antenna; or b) directly to the permanent or temporary receiver antenna connector. Signal generator A shall be at the fr
45、equency of the edge channel of the operating band (see below) of the receiver, with normal modulation (clause 5.1.2) of the wanted signal. Signal generator B, shall be unmodulated and be adjusted to test frequencies above and below the channel edges as specified below. Initially signal generator B s
46、hall be switched off and using signal generator A the level which still gives sufficient response shall be established. The output level of generator A shall then be increased by 3 dB. Signal generator B is then switched on and adjusted until the wanted criteria are met. The frequency for signal gen
47、erator B shall be at the following frequencies: With generator A tuned to the highest channel of the operating band, generator B shall be tuned in turn to +5 MHz, +10 MHz, +20 MHz and +50 MHz from the upper band edge. The tests shall be repeated with generator A tuned to the lowest channel of the op
48、erating band, generator B shall be tuned in turn to -5 MHz, -10 MHz, -20 MHz and -50 MHz from the lower band edge. Frequencies at which spurious responses are found should be ignored. The blocking or desensitization is the ratio in dB between the level of the unwanted signal (generator B) and the le
49、vel of the wanted signal (generator A). 5.5 Adjacent channel selectivity 5.5.1 General This parameter is applicable for equipment where specific carrier frequencies or a channelization is specified. 5.5.2 Method of measurement This measurement shall be conducted under normal conditions. Two signal generators A and B shall be connected to the receiver via a combining network, either: a) via a test fixture to the integrated or dedicated receiver antenna; or b) directly to the permanent or temporary receiver antenna connector. Signal generator A shall be at th
