1、STD-ETSI ETR 270-ENGL I997 3q00855 0198b72 bliT W ETR 290 May 1997 Source: EBU/CENELEC/ETSI-JTC Refe re nce: DT WJTC-O0 DVB-22 ICs: 33.020 Key words: Broadcasting, digital, video, DVB, TV J European Broadcasting Union Union Europenne de Radio-Tlvision U Digital Video Broadcasting (DVB); Measurement
2、guidelines for DVB systems ETSI European Telecommunications Standards Institute ETSI Secretariat Postai address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE X.400: c=fr, a=atlas, p=etsi, s=secretariat - internet: secretariat8e
3、tsi.fr Tel.: +33 4 92 94 42 O0 - Fax: +33 4 93 65 47 16 I 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. O European Telecommunications Standards Institute 1997. O European
4、Broadcasting Union 1997. All rights resered. STD-ETSI ETR 290-ENGL 1997 W 3Li00855 O178b93 58b Page 2 ETR 290: May 1997 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its
5、accuracy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. STDDETSI ETR 290-ENGL 1997 M 3400855 OL98b94 412 Page 3 ETR 290: May 1997 Contents 1 Scope 11 2 References _. 11 3 Definitions and abbreviations . 12 3.1 Definit ions -_ . 12 3.2 Abbreviation
6、s . 12 4 General . 15 5 Measurement and analysis of the MPEG-2 Transport Stream . 17 5.1 General _. . 17 5.2 List of parameters recommended for evaluation . 17 5.2.1 First priority: necessary for de-codability (basic monitoring) . 18 5.2.2 Second priority: recommended for continuous or periodic moni
7、toring 19 5.2.3 Third priority: application dependant monitoring . 20 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 6 Common parameters for satellite and cable transmission media . 24 System availability . . 24 Link availability . 24 BER before RS decoder 25 6.3.1 Out of service 25 6.3.2 In service . 25
8、Error events logging . 25 Transmitter symbol clock jitter and accuracy . 26 RF/IF signal power . 26 Noise power . 26 Bit error count after RS . ._. 27 27 6.9.1 . 27 6.9.3 System Target Error (STE) -29 6.9.4 Carrier suppression . 30 6.9.5 Amplitude Imbalance (AI) 30 6.9.6 Quadrature Error (QE) . 31 I
9、Q signal analysis . 6.9.2 Modulation Error Ratio (MER) . . 28 6.9.7 Residual Target Error (RTE) . 31 6.9.8 Coherent interferer 31 6.9.9 Phase Jitter (PJ) 32 6.9.10 Signal-to-Noise Ratio (SNR) . 33 Interference . . 34 7 Cable specific measurements . 34 7.1 Noise margin 34 7.2 Estimated noise margin .
10、 .43 7.3 Signal quality margin test . 3.4 7.4 Equivalent Noise Degradation (END) 36 7.5 BER vs . EdNo . 38 7.6 Phase noise of RF carrier . 83 7.7 Amplitude, phase and impulse 38 7.8 Out of band emissions . 33 8 Satellite specific measurements ._ . 40 8.1 8.2 8.3 IF spectrum 41 BER before Viterbi dec
11、oding 40 Receive BER vs . E dNo . 40 . STD-ETSI ETR 270-ENGL 1777 3i.100855 OL98b75 357 Page 4 ETR 290: May 1997 9 Measurements specific for a terrestrial (DVB-T) system 42 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 9.10 9.1 1 9.12 9.13 9.14 9.15 9.16 9.17 9.18 9.19 9.20 9.21 Annex A: RF accuracy (precisio
12、n) . 3 Selectivity _._ 43 AFC capture range . A3 Phase noise of Local Oscillators (LO) . 44 RF/IF signal power . 45 Noise power . 45 RF and IF spectrum . A5 Receiver sensitivity/dynamic range for a Gaussian channel . 46 Equivalent Noise Degradation (END) . 46 Linearity characterization (shoulder att
13、enuation) 46 Power efficiency 46 Co heren t i nt erfe rer BER vs . C/N ratio by variation of transmitter power 47 BER vs . C/N ratio by variation of Gaussian noise power 47 BER before Viterbi (inner) decoder . 48 BER before RS (outer) decoder 48 9.16.1 Out of Service . 48 9.16.2 In Service 49 BER af
14、ter RS (outer) decoder . 49 IQ signal analysis 49 9.18.1 Introduction . 49 9.18.2 Modulation Error Ratio (MER) 50 9.18.3 System Target Error (STE) . 51 9.18.4 Carrier Suppression (CS) . 52 9.18.5 9.18.6 Quadrature Error (QE) 53 9.18.7 Phase Jitter (PJ) . 53 Overall signal delay . 55 Channel characte
15、ristics. . ._ 55 Amplitude Imbalance (AI) . 52 SFN synchronization 55 General measurement methods 56 A.l Introduction . 56 A.2 Null packet definition . 56 A.3 Description of the procedure for “Estimated Noise Margin“ by applying statistical analysis on the constellation data 57 A.4 Set-up for RF pha
16、se noise measurements using a spectrum analyser 58 A.5 Amplitude. phase and impulse response of the channel 60 A.6 Out of band emissions 60 Annex B: Examples for test Set-up 61 B.l System availability 61 B.2 Link availability 61 6.3 BER before RS . 61 8.3.1 Out of service measurement . 61 8.3.2 In s
17、ervice measurement . 62 8.4 Event error logging . 62 6.5 Transmitter symbol clock jitter and accuracy . 62 6.6 RF/IF signal power 63 STDOETSI ETR 290-ENGL 1797 m 3q00855 OL98b9b 275 m Page 5 ETR 290: May 1997 8.7 Noise power 63 B.7.1 B.7.2 Out of service measurement . 63 In service measurement 64 B.
18、8 BER after RS . 64 B.9 I/Q signal analysis . 64 B.l O Service data rate measurement . 64 B.11 Noise margin _._ 64 B.l 1.1 B.11.2 Remarks and precautions . 65 B.11.3 Measurement procedure . 66 Recommended equipment . 65 B.12 Equivalent Noise Degradation (END) . 66 8.13 BER VS . Eb/NO . 67 B.14 Equal
19、izer specification . 67 B.15 BER before Viterbi decoding . 68 B.16 Receive BER VS . Eb/No 69 8.17 IF spectrum . 69 Annex C: Measurement parameter definition 70 C.l Definition of Vector Error Measures . 70 C.2 Comparison between MER and EVM . 70 C.3 Conclusions regarding MER and EVM . 71 Annex D: Exa
20、ct values of BER vs . EdNo for DVB-C systems . 72 Annex E: Examples for the terrestrial system test Set-up . 9 E.l RF accuracy 73 E.2 Selectivity . . . 73 E.3 AFC capture range 74 E.4 Phase noise of Local Oscillators (LO) 74 E.5 RF/IF signal power 75 E.5.1 Procedure 1 (power metre) . 57 E.5.2 Proced
21、ure 2 (spectrum analyser) 75 E.6 Noise power 75 E.6.1 Procedure 1 . 76 E.6.2 Procedure 2 . 76 E.6.3 Procedure 3 . 76 E.6.4 Measurement of noise with a spectrum analyser 76 E.7 RF and IF spectrum 77 E.8 Receiver sensitivity/dynamic range for a Gaussian channel . 77 E.9 Equivalent Noise Degradation (E
22、ND) . 78 STD-ETSI ETR 270-ENGL 1997 3ir00855 OL78b97 121 Page 6 ETR 290: May 1997 E . 1 O Linearity characterization (shoulder attenuation) 78 E.10.1 Equipment . 78 E.10.2 Remarks and precautions 97 E.10.3 Measurement procedure (example for UHF channel 47) 79 E.11 Power efficiency 80 E.12 Coherent i
23、nterferer 80 E.13 BER vs . C/N by variation of transmitter power 81 E.14 BER vs . C/N by variation of Gaussian noise power 8 E.15 BER before Viterbi (inner) decoder 81 Annex F: Specification of test signais of DVB-T modulator . 82 F.l Introduction . 82 F.2 Input signal . 82 F.3 Test modes . 83 F.4 T
24、est points 83 F.5 File format for interchange of simulated data . . 83 F.5.1 F.5.2 Length of data buffer . 84 F.5.3 F.5.4 Carrier allocation . 84 F.5.5 Scaling . 85 F.5.6 Constellation F.5.7 Hierarchy . F.5.8 Code rate LP and HP . F.5.9 Guard interval F.5.10 Transmission mode 86 F.5.11 Data format .
25、 86 F.5.12 Example 86 Test point number . 84 Bit ordering after inner interleaver . 4 Annex G: Specification of test signals of DVB-T modulator . 87 G.l Overview . 87 G.2 RF/IF power (“carrier“) 87 G.3 Noise level 88 G.4 Energy-per-bit (Eb) . 88 G.5 G.6 C/N ratio and EdNo ratio 89 Practical applicat
26、ion of the measurements 89 G.7 Example 90 G.8 Signal-to-Noise Ratio (SNR) and Modulation Error Ratio (MER) . 92 G.9 BER vs . C/N 92 G.10 Error probability of Quadrature Amplitude Modulation (QAM) 93 G.11 Error probability of QPSK . 94 STD*ETSI ETR 270-ENGL 1997 m 3Li00855 OL78b78 Ob8 m Page 7 ETR 29
27、0: May 1997 G.12 Error probability after Viterbi decoding . 95 G.13 Error probability after RS decoding 96 G.14 BEP vs . C/N for DVB cable transmission . 96 G.15 BER vs . C/N for DVB satellite transmission . 97 G.16 Adding noise to a noisy signal _. 98 Annex H: Bibliography 101 History . 102 STD-ETS
28、I ETR 270-ENGL 1997 = 3400855 OL9Ab77 TT4 Page 9 ETR 290: May 1997 Foreword This ETSI Technical Report (ETR) has been produced under the authority of the Joint Technical Committee (JTC) of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the Europe
29、an Telecommunications Standards Institute (ETSI). ETRs are informative documents resulting from ETSI studies which are not appropriate for European Telecommunication Standard (ETS) or Interim European Telecommunication Standard (I-ETS) status. An ETR may be used to publish material which is either o
30、f an informative nature, relating to the use or the application of ETSs or I-ETSs, or which is immature and not yet suitable for formal adoption as an ETS or an I-ETS. NOTE: The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of ETSs in the specific field of broadcasting and related
31、 fields. Since 1995 the JTC became a tripartite body by including in the Memorandum of Understanding also CENELEC, which is responsible for the standardization of radio and television receivers. The EBU is a professional association of broadcasting organizations whose work includes the co-ordination
32、 of its Members activities in the technical, legal, programme-making and programme-exchange domains. The EBU has Active Members in about 60 countries in the European Broadcasting Area; its headquarters is in Geneva *. * European Broadcasting Union Case Postale 67 CH-121 8 GRAND SACONNEX (Geneva) Swi
33、tzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 81 Digital Video Broadcasting (DVB) Project Founded in September 1993, the DVB Project is a market-led consortium of public and private sector organizations in the television industry. Its aim is to establish the framework for the introduction of MPE
34、G-2 based digital television services. Now comprising over 200 organizations from more than 25 countries around the world, DVB fosters market-led systems, which meet the real needs, and economic circumstances, of the consumer electronics and the broadcast industry. Previous page is blank STD-ETSI ET
35、R 270-ENGL 3777 3400855 0378700 5Yb 9 Page 11 ETR 290: May 1997 1 Scope This ETSI Technical Report (ETR) provides guidelines for measurement in Digital Video Broadcasting (DVB) satellite, cable and terrestrial and related digital television systems. The present document defines a number of measureme
36、nt techniques, such that the results obtained are comparable when the measurement is carried out in compliance with the appropriate definition. The present document uses terminology used in ETS 300 421 5, ETS 300 429 6, ETS 300 468 7 and ETS 300 744 (91 and it should be read in conjunctions with the
37、m. 2 References For the purposes of this ETR, the following references apply: ISO/IEC 1381 8-1 : “Information Technology - Generic coding of moving pictures and associated audio: Systems, Recommendation H.222.0“. ISO/IEC 1381 8-4: “Information Technology - Generic coding of moving pictures and assoc
38、iated audio: Compliance“. (31 ISO/IEC 1381 8-9: “Information Technology - Generic coding of moving pictures and associated audio: Conformance“. 141 ETR 154: “Digital Video Broadcasting (DVB); DVB implementation guidelines for the use of MPEG-2 Systems, Video and Audio in satellite, cable and terrest
39、rial broadcasting applications“. 51 ETS 300 421: “Digital Video Broadcasting (DVB); DVB framing structure, channel coding and modulation for 11/12 GHz satellite services“. ETS 300 429: “Digital Video Broadcasting (DVB); DVB framing structure, channel coding and modulation for cable systems“. 71 ETS
40、300 468: “Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems“. ETR 21 1 : “Digital Video Broadcasting (DVB); DVB guidelines on implementation and usage of Service Information (Si)“. i91 ETS 300 744: “Digital Video Broadcasting (DVB); Framing structure, channe
41、l coding and modulation for digital terrestrial television“. EN 50083-9: “Interfaces for CATV/SMATV Head-ends and similar Professional Equipment“. ITU-T Recommendation G.826: “Error performance and objectives for international, constant bitrate digital paths at or above the primary rate“. ITU-T Reco
42、mmendation 0.1 51 : “Error performance measuring equipment operating at the primary rate and above“. i 31 ETS 300 473: “Digital Video Broadcasting (DVB); DVB Satellite Master Antenna Television (SMATV) distribution systems“. 41 TS 301 191: “Digital Video Broadcasting (DVB); DVB mega-frame for Single
43、 Frequency Network (SFN) synchronization“. ETS 300 748: “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for MVOS at 10 GHz and above“. ETS 300 749: “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for MMDS systems below 10 GHz“.
44、Previous page is blank STD-ETSI ETR 290-ENGL 1997 = ILi00855 0198701 Li82 W Page 12 ETR 290: May 1997 3 Definitions and abbreviations 3.1 Definitions For the purposes of this ETR, the following definitions apply: MPEG-2: Refers to the ISO/IEC 13818 series. Systems coding is defined in part 1. Video
45、coding is defined in part 2. Audio coding is defined in pari 3. multiplex: A stream of all the digital data carrying one or more services within a single physical channel. Service Information (SI): Digital data describing the delivery system, content and scheduling/timing of broadcast data streams e
46、tc. It includes MPEG-2 Program Specific Information (PSI) together with independently defined extensions. Transport Stream (TS): A TS is a data structure defined in ISO/IEC 13818-1 l. It is the basis of the Digital Video Broadcasting (DVB) related standards. 3.2 Abbreviations For the purposes of thi
47、s ETR, the following abbreviations apply: AFC AI ASCII ATM AWGN BAT BEP BER bs I bf BW C/N CA CATV CPE CRC cs cso CTB cw DC DVB DVB-C DVB-CS DVB-MC DVB-MS DVB-S DVB-T EB E IT EMM ENB E ND ES ETR Automatic Frequency Control Amplitude Imbalance American Standard Code for Information Interchange Asynch
48、ronous Transfer Mode Additive White Gaussian Noise Bouquet Association Table Bit Error Probability Bit Error Rate bit string, left bit first Bandwidth ratio of RF or IF signal power to noise power Conditional Access Community Antenna TeleVision Common Phase Error Cyclic Redundancy Check Carrier Supp
49、ression Carrier Suppression O. Carrier T. B. Con tin uous Wave Direct Current Digital Video Broadcasting Digital Video Broadcasting baseline system for digital cable television (ETS 300 429 SI) Digital Video Broadcasting baseline system for SMATV distribution systems (ETS 300 473 13) Digital Video Broadcasting baseline system for Multi-point Video Distribution Systems below 1 O GHz (ETS 300 749 16) Digital Video Broadcasting baseline system for Multi-point Video Distribution Systems at 10 GHz and above (ETS 300 748 15) Digital Video Broadcasting baseline
