IEC 62553:2012
(Main)Methods of measurement for digital network - Performance characteristics of terrestrial digital multimedia transmission network
Methods of measurement for digital network - Performance characteristics of terrestrial digital multimedia transmission network
IEC 62553:2012 is intended to establish measuring methods that enable the objective evaluation of the performance of transmission networks so as to make stable DTTB services a reality and establish a technical baseline, such as a definition of technical terms, to standardize measuring methods. The measurement methods described are intended for digital terrestrial television transmission network test and validation.
Méthodes de mesure pour réseau numérique - Caractéristiques de performances d’un réseau de transmission multimédia numérique terrestre
IEC 62553:2012 vise à établir des méthodes de mesure qui permettent d’évaluer objectivement le rendement des réseaux de transmission afin de faire de la stabilité des services de la DTTB une réalité et d’établir une base technique, telle qu’une définition des termes techniques, afin de normaliser les méthodes de mesure. Les méthodes de mesure décrites sont destinées au test et à la validation du réseau de transmission numérique terrestre.
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IEC 62553 ®
Edition 1.0 2012-11
INTERNATIONAL
STANDARD
colour
inside
Methods of measurement for digital network – Performance characteristics of
terrestrial digital multimedia transmission network
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IEC 62553 ®
Edition 1.0 2012-11
INTERNATIONAL
STANDARD
colour
inside
Methods of measurement for digital network – Performance characteristics of
terrestrial digital multimedia transmission network
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XA
ICS 33.170 ISBN 978-2-83220-502-0
– 2 – 62553 © IEC:2012(E)
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and abbreviations . 8
4 General conditions of measurement . 9
4.1 Definitions and classifications of digital terrestrial TV transmission network . 9
4.1.1 General . 9
4.1.2 Network classification for transmitting frequencies . 10
4.1.3 Network classification on useable contribution links for signal transport
system between stations . 11
4.2 Signal form . 11
4.2.1 TS signal form . 11
4.2.2 IF signal form . 11
4.3 Test signals and auxiliary signals for measurement . 11
4.3.1 Test signals . 11
4.3.2 Auxiliary signals for measurement . 12
5 Methods of measurement for signal delay time . 12
5.1 Scope . 12
5.2 Definition of signal delay time . 13
5.2.1 Delay time . 13
5.2.2 Relative delay time difference . 13
5.3 Direct/indirect measurement . 13
5.3.1 General . 13
5.3.2 Direct measurement system . 14
5.3.3 Indirect measurement system . 14
5.4 Measurement place . 14
5.5 Classification of measurement system . 15
6 Methods of measurement for performances of radio wave relay station . 17
6.1 Scope . 17
6.2 Measurement diagram and measurement items . 17
6.2.1 General . 17
6.2.2 Measurement diagram . 17
6.2.3 Measurement items . 18
6.3 Methods of measurement . 18
6.3.1 General . 18
6.3.2 BER (case 2) . 19
6.3.3 Equivalent noise degradation (END) . 20
6.3.4 Amplitude frequency characteristics . 21
6.3.5 Delay profile . 22
6.3.6 Phase jitter . 22
7 Methods of measurement for performances of signal quality improvement instrument
used in radio wave relay station . 24
7.1 General . 24
7.2 Classification of signal quality improvement instrument . 25
7.3 Measurement diagram and measurement condition . 25
7.4 Common measurement items . 25
62553 © IEC:2012(E) – 3 –
7.5 Methods of measurement for each kind of compensator . 26
Annex A (informative) Examples of measurement methods for signal delay . 27
Annex B (informative) Examples of measurement methods for signal quality of relay
stations . 38
Annex C (normative) Principle and methods of measurement of compensators . 45
Figure 1 – Example of transmission network . 10
Figure 2 – Delay time and relative delay time difference definitons . 13
Figure 3 – Direct and indirect measurement method . 14
Figure 4 – Measurement diagram of received signal of relay station (case a)) . 17
Figure 5 – Measurement diagram of relay station (case b)) . 17
Figure 6 − BER- Measurement method . 20
Figure 7 – Definition of END . 21
Figure 8 – Measurement diagram of amplitude-frequency characteristics . 22
Figure 9 – Measurement block diagram of delay profile . 22
Figure 10 – Reference model . 23
Figure 11 – Conceptual diagram of relay station using a compensator . 25
Figure A.1 – General measurement system for cases 1 to 3 . 27
Figure A.2 – Example of frame sync signal extracting part . 28
Figure A.3 – Example of OFDM demodulator for frame timing extraction . 29
Figure A.4 – Block diagram of direct measurement methods for time delay of OFDM
signal . 30
Figure A.5 – Example of frequency characteristics of combined signal . 31
Figure A.6 – Example of delay profile of combined signal . 31
Figure A.7 – General measurement system for cases 5,6,13 and 14 . 32
Figure A.8 – Timing chart for signal delay measurement . 32
Figure A.9 – Principle of measurement using 1 pps signal . 33
Figure A.10 – General measurement system for cases 7, 8 and 15,16 . 34
Figure A.11 – Measurement system for delay time (time reference is 1pps signal of GPS)
............................................................................................................................................. 35
Figure A.12 – Timing relation of each signals . 36
Figure A.13 – Delay profile of OFDM signal . 37
Figure B.1 – BER measurement conceptual diagram for Null Packet method . 39
Figure B.2 – Examples of measurement result by Null Packet method . 39
Figure B.3 – Method to compare the data before/after correction . 40
Figure B.4 – Superimposed C/N measurement system . 41
Figure B.5 – Inherent degradation of OFDM demodulator measurement system . 43
Figure B.6 – Calculation process of delay profile . 44
Figure C.1 – Example of measurement block diagram for performances of loop-back
canceller . 46
Figure C.2 – Example of measurement block diagram for performances of diversity
reception equipment . 48
Figure C.3 – Example of measurement block diagram for performances of co-channel
interference canceller . 50
– 4 – 62553 © IEC:2012(E)
Figure C.4 – Example of measurement block diagram for performances of C/N Reset
equipment . 52
Table 1 – Classification of contribution link . 11
Table 2 – Parameter set of OFDM signal for test in ISDB-T system. 11
Table 3 – Parameter set of OFDM signal for test in DVB-T/H system . 12
Table 4 – Combination of signal type . 13
Table 5 – Classification of measurement system for signal delay time . 16
Table 6 – An example of measurement items for Relay station . 18
Table 7 – Example of the parameter set of spectrum analyzer . 22
Table 8 – Compensators used in digital terrestrial broadcasting relay network . 25
Table 9 – Examples of measurement items for signal quality improvement instrument . 26
Table A.1 – Signal format and timing extraction of each case . 27
Table A.2 – Equipment list for measurement . 30
Table A.3 – Equipment list for delay time measurement .
...
IEC 62553 ®
Edition 1.0 2012-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Methods of measurement for digital network – Performance characteristics of
terrestrial digital multimedia transmission network
Méthodes de mesure pour réseau numérique – Caractéristiques de
performances d’un réseau de transmission multimédia numérique terrestre
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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IEC 62553 ®
Edition 1.0 2012-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Methods of measurement for digital network – Performance characteristics of
terrestrial digital multimedia transmission network
Méthodes de mesure pour réseau numérique – Caractéristiques de
performances d’un réseau de transmission multimédia numérique terrestre
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.170 ISBN 978-2-8322-9365-2
– 2 – IEC 62553:2012 © IEC 2012
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and abbreviations . 8
4 General conditions of measurement . 9
4.1 Definitions and classifications of digital terrestrial TV transmission network . 9
4.1.1 General . 9
4.1.2 Network classification for transmitting frequencies . 10
4.1.3 Network classification on useable contribution links for signal transport
system between stations . 11
4.2 Signal form . 11
4.2.1 TS signal form . 11
4.2.2 IF signal form . 11
4.3 Test signals and auxiliary signals for measurement . 11
4.3.1 Test signals . 11
4.3.2 Auxiliary signals for measurement . 12
5 Methods of measurement for signal delay time . 12
5.1 Scope . 12
5.2 Definition of signal delay time . 13
5.2.1 Delay time . 13
5.2.2 Relative delay time difference . 13
5.3 Direct/indirect measurement . 13
5.3.1 General . 13
5.3.2 Direct measurement system . 14
5.3.3 Indirect measurement system . 14
5.4 Measurement place . 14
5.5 Classification of measurement system . 15
6 Methods of measurement for performances of radio wave relay station . 17
6.1 Scope . 17
6.2 Measurement diagram and measurement items . 17
6.2.1 General . 17
6.2.2 Measurement diagram . 17
6.2.3 Measurement items . 18
6.3 Methods of measurement . 18
6.3.1 General . 18
6.3.2 BER (case 2) . 19
6.3.3 Equivalent noise degradation (END) . 20
6.3.4 Amplitude frequency characteristics . 21
6.3.5 Delay profile . 22
6.3.6 Phase jitter . 22
7 Methods of measurement for performances of signal quality improvement instrument
used in radio wave relay station . 24
7.1 General . 24
7.2 Classification of signal quality improvement instrument . 25
7.3 Measurement diagram and measurement condition . 25
7.4 Common measurement items . 25
7.5 Methods of measurement for each kind of compensator . 26
Annex A (informative) Examples of measurement methods for signal delay . 27
Annex B (informative) Examples of measurement methods for signal quality of relay
stations . 38
Annex C (normative) Principle and methods of measurement of compensators . 45
Figure 1 – Example of transmission network . 10
Figure 2 – Delay time and relative delay time difference definitons . 13
Figure 3 – Direct and indirect measurement method . 14
Figure 4 – Measurement diagram of received signal of relay station (case a)) . 17
Figure 5 – Measurement diagram of relay station (case b)) . 17
Figure 6 − BER- Measurement method . 20
Figure 7 – Definition of END . 21
Figure 8 – Measurement diagram of amplitude-frequency characteristics . 22
Figure 9 – Measurement block diagram of delay profile . 22
Figure 10 – Reference model . 23
Figure 11 – Conceptual diagram of relay station using a compensator . 25
Figure A.1 – General measurement system for cases 1 to 3 . 27
Figure A.2 – Example of frame sync signal extracting part . 28
Figure A.3 – Example of OFDM demodulator for frame timing extraction . 29
Figure A.4 – Block diagram of direct measurement methods for time delay of OFDM
signal . 30
Figure A.5 – Example of frequency characteristics of combined signal . 31
Figure A.6 – Example of delay profile of combined signal . 31
Figure A.7 – General measurement system for cases 5,6,13 and 14 . 32
Figure A.8 – Timing chart for signal delay measurement . 32
Figure A.9 – Principle of measurement using 1 pps signal . 33
Figure A.10 – General measurement system for cases 7, 8 and 15,16 . 34
Figure A.11 – Measurement system for delay time (time reference is 1pps signal of GPS)
............................................................................................................................................. 35
Figure A.12 – Timing relation of each signals . 36
Figure
...
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