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BS IEC 62106-1:2018

BS IEC 62106-1:2018

$142.49

Radio data system (RDS). VHF/FM sound broadcasting in the frequency range from 64,0 MHz to 108,0 MHz – Modulation characteristics and baseband coding

Published By Publication Date Number of Pages
BSI 2018 32
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IEC 62106-1:2018 defines the basic layer of the Radio Data System (RDS) intended for application to VHF/FM sound broadcasts in the range 64,0 MHz to 108,0 MHz, which can carry either stereophonic (pilot-tone system) or monophonic programmes (as stated in ITU?R Recommendation BS.450-3 and ITU-R Recommendation BS.643-3). IEC 62106-1:2018 together with IEC 62106-2, IEC 62106-3, IEC 62106-4, IEC 62106-5 and IEC 62106-6, cancels and replaces IEC 62106:2015, and constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 62106:2015: •    Provision has been made to carry RDS on multiple data-streams (RDS2).

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
6 FOREWORD
8 INTRODUCTION
9 1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
10 3.2 Abbreviated terms
3.3 Notation and conventions
3.3.1 Hexadecimal notation
3.3.2 Nomenclature for group types
3.3.3 Capitalized RDS terms
4 Modulation characteristics of the data channels
4.1 General
11 4.2 Subcarrier generation
Figures
Figure 1 – Block diagram of data-stream 0 radio-data equipment at the transmitter
12 4.3 Data-stream subcarrier frequencies for all possible streams
Figure 2 – Block diagram of a typical data-stream 0 radio-data receiver/decoder
Figure 3 – Subcarriers for RDS data-stream 0 andadditional RDS2 data-streams 1, 2 and 3
13 4.4 Subcarrier phase requirements
4.5 Subcarrier level requirements
4.6 Data-stream modulation requirements
4.7 Clock-frequency and data-rate
4.8 Differential coding on all data-streams
14 4.9 Data-channel spectrum shaping on all data-streams
Tables
Table 1 – Encoding rules
Table 2 – Decoding rules
15 Figure 4 – Amplitude response of the specified transmitteror receiver data-shaping filter
16 Figure 5 – Amplitude response of the combined transmitterand receiver data-shaping filters
Figure 6 – Spectrum of biphase coded radio-data signals
17 4.10 Symbol phase shifts of data across data-streams
Figure 7 – Time-function of a single biphase symbol
Figure 8 – 57 kHz modulated data-signal
18 5 Baseband coding
5.1 Data-stream baseband coding structure
5.2 Data-stream error protection
Figure 9 – Structure of the baseband coding
Table 3 – Phase shifts of data across data-streams 1-3with respect to data-stream 0
19 5.3 Synchronization of blocks and groups across all streams
20 6 Transmission options on data-streams 1, 2 and 3
21 Annex A (normative)Offset words to be used for group and block synchronization
Table A.1 – Offset word codes
22 Annex B (informative)Theory and implementation of the modified shortened cyclic code
B.1 General
B.2 Encoding procedure
23 Figure B.1 – Generator matrix of the basicshortened cyclic code in binary notation
24 Figure B.2 – Shift-register implementation of the encoder
25 B.3 Decoding procedure
26 Figure B.3 – Parity-check matrix of the basic shortened cyclic code
Table B.1 – Offset word syndromes using matrix of Figure B.3
27 Figure B.4 – Shift-register implementation of the decoder
28 Annex C (informative) Implementation of group and block synchronization using the modified shortened cyclic code
C.1 Theory
C.2 Shift register arrangement for deriving group and block synchronization information
29 Figure C.1 – Group and block synchronization detection circuit
30 Table C.1 – Offset word syndromes for group and block synchronization
31 Bibliography

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BS IEC 62106-1:2018
$142.49