1、 TIA-902.BBAD-2003 APPROVED: AUGUST 1, 2003 REAFFIRMED: APRIL 23, 2013 TIA-902.BBAD August 2003Wideband Air Interface Isotropic Orthogonal Transform Algorithm (IOTA) Radio Channel Coding (CHC) Specification- Public Safety Wideband Data Standards Project Digital Radio Technical Standards NOTICE TIA E
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26、ght to its attention. IOTA Radio Channel Coding Specification TIA-902.BBAD v TABLE OF CONTENTS 1. SCOPE9 1.1 FORWARD ERROR CORRECTION .9 1.2 INTERLEAVING10 2. RADIO CHANNEL CODING12 2.1 PUNCTURED CONVOLUTIONAL CODES 12 2.1.1 Mother convolutional code16 2.1.2 Cyclic encoding .16 2.1.3 Puncturing matr
27、ix17 2.2 BIT INTERLEAVING.18 2.3 SLOT INTERLEAVING19 3. REFERENCES 89 4. ABBREVIATIONS90 TIA-902.BBAD IOTA Radio Channel Coding Specificationvi Table of Figures FIGURE 1 WIDEBAND AIR INTERFACE WITH RADIO CHANNEL CODING . 9 FIGURE 2 REFERENCE TRANSMITTER CONFIGURATION 9 FIGURE 3 REFERENCE RECEIVER CO
28、NFIGURATION . 9 FIGURE 4 RADIO CHANNEL ENCODING SCHEMATIC DIAGRAM . 11 FIGURE 5 SCHEMATIC DIAGRAM OF THE MOTHER CONVOLUTIONAL ENCODER 16 IOTA Radio Channel Coding Specification TIA-902.BBAD vii List of Tables TABLE 1. OUTBOUND PUNCTURED CONVOLUTIONAL CODES PARAMETERS 13 TABLE 2. DIRECT MODE PUNCTURE
29、D CONVOLUTIONAL CODES PARAMETERS 14 TABLE 3. INBOUND PUNCTURED CONVOLUTIONAL CODES PARAMETERS 15 TABLE 4. INTERLEAVING FACTORS AND THEIR MULTIPLICATIVE INVERSES 19 TABLE 5. OUTBOUND 50 KHZ SLOT INTERLEAVE 21 TABLE 6. OUTBOUND 50 KHZ SLOT INTERLEAVE (CONTINUED) 22 TABLE 7. OUTBOUND 50 KHZ BLOCK SYMBO
30、L ORDER 23 TABLE 8. OUTBOUND 100 KHZ SLOT INTERLEAVE 24 TABLE 9. OUTBOUND 100 KHZ SLOT INTERLEAVE (CONTINUED) 25 TABLE 10. OUTBOUND 100 KHZ SLOT INTERLEAVE (CONTINUED) 26 TABLE 11. OUTBOUND 100 KHZ SLOT INTERLEAVE (CONTINUED) 27 TABLE 12. OUTBOUND 100 KHZ SLOT INTERLEAVE (CONTINUED) 28 TABLE 13. OUT
31、BOUND 100 KHZ BLOCK SYMBOL ORDER 29 TABLE 14. OUTBOUND 100 KHZ BLOCK SYMBOL ORDER (CONTINUED) 30 TABLE 15. OUTBOUND 100 KHZ BLOCK SYMBOL ORDER (CONTINUED) 31 TABLE 16. OUTBOUND 150 KHZ SLOT INTERLEAVE 32 TABLE 17. OUTBOUND 150 KHZ SLOT INTERLEAVE (CONTINUED) 33 TABLE 18. OUTBOUND 150 KHZ SLOT INTERL
32、EAVE (CONTINUED) 34 TABLE 19. OUTBOUND 150 KHZ SLOT INTERLEAVE (CONTINUED) 35 TABLE 20. OUTBOUND 150 KHZ SLOT INTERLEAVE (CONTINUED) 36 TABLE 21. OUTBOUND 150 KHZ SLOT INTERLEAVE (CONTINUED) 37 TABLE 22. OUTBOUND 150 KHZ SLOT INTERLEAVE (CONTINUED) 38 TABLE 23. OUTBOUND 150 KHZ BLOCK SYMBOL ORDER 39
33、 TABLE 24. OUTBOUND 150 KHZ BLOCK SYMBOL ORDER (CONTINUED) 40 TABLE 25. OUTBOUND 150 KHZ BLOCK SYMBOL ORDER (CONTINUED) 41 TABLE 26. OUTBOUND 150 KHZ BLOCK SYMBOL ORDER (CONTINUED) 42 TABLE 27. DIRECT 50 KHZ SLOT INTERLEAVE 43 TABLE 28. DIRECT 50 KHZ SLOT INTERLEAVE (CONTINUED) 44 TABLE 29. DIRECT 5
34、0 KHZ BLOCK SYMBOL ORDER 45 TABLE 30. DIRECT 100 KHZ SLOT INTERLEAVE 46 TABLE 31. DIRECT 100 KHZ SLOT INTERLEAVE (CONTINUED) 47 TABLE 32. DIRECT 100 KHZ SLOT INTERLEAVE (CONTINUED) 48 TABLE 33. DIRECT 100 KHZ SLOT INTERLEAVE (CONTINUED) 49 TABLE 34. DIRECT 100 KHZ SLOT INTERLEAVE (CONTINUED) 50 TABL
35、E 35. DIRECT 100 KHZ BLOCK SYMBOL ORDER 51 TABLE 36. DIRECT 100 KHZ BLOCK SYMBOL ORDER (CONTINUED) 52 TABLE 37. DIRECT 100 KHZ BLOCK SYMBOL ORDER (CONTINUED) 53 TABLE 38. DIRECT 150 KHZ SLOT INTERLEAVE 54 TABLE 39. DIRECT 150 KHZ SLOT INTERLEAVE (CONTINUED) 55 TABLE 40. DIRECT 150 KHZ SLOT INTERLEAV
36、E (CONTINUED) 56 TABLE 41. DIRECT 150 KHZ SLOT INTERLEAVE (CONTINUED) 57 TABLE 42. DIRECT 150 KHZ SLOT INTERLEAVE (CONTINUED) 58 TABLE 43. DIRECT 150 KHZ SLOT INTERLEAVE (CONTINUED) 59 TABLE 44. DIRECT 150 KHZ SLOT INTERLEAVE (CONTINUED) 60 TABLE 45. DIRECT 150 KHZ BLOCK SYMBOL ORDER 61 TABLE 46. DI
37、RECT 150 KHZ BLOCK SYMBOL ORDER (CONTINUED) 62 TABLE 47. DIRECT 150 KHZ BLOCK SYMBOL ORDER (CONTINUED) 63 TABLE 48. DIRECT 150 KHZ BLOCK SYMBOL ORDER (CONTINUED) 64 TABLE 49. INBOUND 50 KHZ SLOT INTERLEAVE 65 TABLE 50. INBOUND 50 KHZ SLOT INTERLEAVE (CONTINUED) 66 TABLE 51. INBOUND 50 KHZ BLOCK SYMB
38、OL ORDER 67 TABLE 52. INBOUND 100 KHZ SLOT INTERLEAVE 68 TABLE 53. INBOUND 100 KHZ SLOT INTERLEAVE (CONTINUED) 69 TIA-902.BBAD IOTA Radio Channel Coding Specificationviii TABLE 54. INBOUND 100 KHZ SLOT INTERLEAVE (CONTINUED) 70 TABLE 55. INBOUND 100 KHZ SLOT INTERLEAVE (CONTINUED) 71 TABLE 56. INBOU
39、ND 100 KHZ SLOT INTERLEAVE (CONTINUED) 72 TABLE 57. INBOUND 100 KHZ BLOCK SYMBOL ORDER 73 TABLE 58. INBOUND 100 KHZ BLOCK SYMBOL ORDER (CONTINUED) 74 TABLE 59. INBOUND 100 KHZ BLOCK SYMBOL ORDER (CONTINUED) 75 TABLE 60. INBOUND 150 KHZ SLOT INTERLEAVE 76 TABLE 61. INBOUND 150 KHZ SLOT INTERLEAVE (CO
40、NTINUED) 77 TABLE 62. INBOUND 150 KHZ SLOT INTERLEAVE (CONTINUED) 78 TABLE 63. INBOUND 150 KHZ SLOT INTERLEAVE (CONTINUED) 79 TABLE 64. INBOUND 150 KHZ SLOT INTERLEAVE (CONTINUED) 80 TABLE 65. INBOUND 150 KHZ SLOT INTERLEAVE (CONTINUED) 81 TABLE 66. INBOUND 150 KHZ SLOT INTERLEAVE (CONTINUED) 82 TAB
41、LE 67. INBOUND 150 KHZ BLOCK SYMBOL ORDER 83 TABLE 68. INBOUND 150 KHZ BLOCK SYMBOL ORDER (CONTINUED) 84 TABLE 69. INBOUND 150 KHZ BLOCK SYMBOL ORDER (CONTINUED) 85 TABLE 70. INBOUND 150 KHZ BLOCK SYMBOL ORDER (CONTINUED) 86 TABLE 71. INBOUND RANDOM ACCESS SLOT INTERLEAVE 87 TABLE 72. INBOUND RANDOM
42、 ACCESS BLOCK SYMBOL ORDER 88 DOCUMENT REVISION HISTORY Revision History Version Date Description Issue A 10/08/02 Initial draft submitted to TIA TR-8.5 Issue B 12/03/02 Second draft submitted to TIA TR-8.5 Issue C 6/10/03 Updates per ballot comments IOTA Radio Channel Coding Specification TIA-902.B
43、BAD 9 1. Scope Radio channel coding is a function in the wide band air interface between the MAC/RLA sublayer and the modulation in the physical layer. Radio channel coding is present in all radios in a system with a wide band air interface. MAC/RLARadio Channel CodingModulationTransmitter ReceiverM
44、AC/RLARadio Channel CodingModulationFigure 1 Wideband Air Interface with Radio Channel Coding The radio channel coding functions are used to maximize data throughput and minimize delay through the error-prone Wideband Air Interface (WAI). Figure 2 shows the reference configuration of a WAI transmitt
45、er, and Figure 3 shows the reference configuration of a WAI receiver. Wideband Air Interface is defined for Isotropic Orthogonal Transform Algorithm (IOTA) in reference 1. Diagrams of figure 2 and 3 show the major processing blocks between the radio channel coding and physical layers. These processi
46、ng blocks exist for all WAI configuration modes (SAM and IOTA) and, except for scrambling, they are described here in the case of IOTA. The scrambler and forward error correction (FEC) coding functions blocks operate at the bit level while the interleaver and modulator operate at the symbol level. S
47、crambler FEC coding Interleaver ModulatorFigure 2 Reference Transmitter Configuration Descrambler FEC decoder Deinterleaver DemodulatorFigure 3 Reference Receiver Configuration The functions and procedures for radio channel coding include scrambling which is defined and described in the MAC/RLA Laye
48、r Specification given in reference 2. The other functions of forward error correction, interleaving, and mapping to physical layer modulation symbols are defined in the following sections in the case of IOTA. 1.1 Forward Error Correction TIA-902.BBAD IOTA Radio Channel Coding Specification10 Forward
49、 error correction codes (FECs) allow the detection and correction of symbol errors introduced on the radio channel. The objective of FEC is to correct channel errors, but, if the signal to noise ratio is too low, all the errors cannot be corrected. Cyclical Redundancy Codes (CRCs) are therefore included in MAC Blocks (MxBKs). The CRCs are used to detect errors in radio channel transmissions within the MAC layer when correction capacity of the FEC is exceeded. 1.2 Interleaving Interleaving spreads in time and frequency the symbols originally coded sequentially. With interleav
