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: \u2022 Provision has been made to carry RDS on multiple data-streams (RDS2).<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4.2 Subcarrier generation Figures Figure 1 \u2013 Block diagram of data-stream 0 radio-data equipment at the transmitter <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.3 Data-stream subcarrier frequencies for all possible streams Figure 2 \u2013 Block diagram of a typical data-stream 0 radio-data receiver\/decoder Figure 3 \u2013 Subcarriers for RDS data-stream 0 andadditional RDS2 data-streams 1, 2 and 3 <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.9 Data-channel spectrum shaping on all data-streams Tables Table 1 \u2013 Encoding rules Table 2 \u2013 Decoding rules <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Figure 4 \u2013 Amplitude response of the specified transmitteror receiver data-shaping filter <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Figure 5 \u2013 Amplitude response of the combined transmitterand receiver data-shaping filters Figure 6 \u2013 Spectrum of biphase coded radio-data signals <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 4.10 Symbol phase shifts of data across data-streams Figure 7 \u2013 Time-function of a single biphase symbol Figure 8 \u2013 57 kHz modulated data-signal <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5 Baseband coding 5.1 Data-stream baseband coding structure 5.2 Data-stream error protection Figure 9 \u2013 Structure of the baseband coding Table 3 \u2013 Phase shifts of data across data-streams 1-3with respect to data-stream 0 <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 5.3 Synchronization of blocks and groups across all streams <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 6 Transmission options on data-streams 1, 2 and 3 <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Annex A (normative)Offset words to be used for group and block synchronization Table A.1 \u2013 Offset word codes <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Annex B (informative)Theory and implementation of the modified shortened cyclic code B.1 General B.2 Encoding procedure <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Figure B.1 \u2013 Generator matrix of the basicshortened cyclic code in binary notation <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Figure B.2 \u2013 Shift-register implementation of the encoder <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | B.3 Decoding procedure <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Figure B.3 \u2013 Parity-check matrix of the basic shortened cyclic code Table B.1 \u2013 Offset word syndromes using matrix of Figure B.3 <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Figure B.4 \u2013 Shift-register implementation of the decoder <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Figure C.1 \u2013 Group and block synchronization detection circuit <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Table C.1 \u2013 Offset word syndromes for group and block synchronization <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" 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<\/b><\/p>\n |