ANSI TIA-902.BAAD-A-2003 Wideband Air Interface Scalable Adaptive Modulation (SAM) Radio Channel Coding Specification- Public Safety Wideband Data Standards Project- Digital Radio .pdf

1、 TIA-902.BAAD-A September 2003Wideband Air Interface Scalable Adaptive Modulation (SAM) Radio Channel Coding Specification- Public Safety Wideband Data Standards Project- Digital Radio Technical Standards ANSI/TIA-902.BAAD-A-2003 APPROVED: SEPTEMBER 23, 2003REAFFIRMED: DECEMBER 17, 2008 REAFFIRMED:

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6、stablish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Project No. SP-3-0080-UGRV1-RF2, formulated under the cognizance of the TIA TR-8 Mobile and Personal Private Radio Standards, TR-8.5 Subcommittee on Signaling and Data

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18、INED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY O

19、R OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. WAI SAM CHC Specification TIA-902.BAAD-A i Foreword (This foreword

20、 is not part of this standard.) This document has been published by the Telecommunications Industry Association (TIA) in accordance with the terms and conditions provided for in a Memorandum of Understanding (MoU) executed by and between the TIA, the Associated Public-Safety Communications Officials

21、 (APCO), the National Association of State Telecommunications Directors (NASTD), and the various agencies of the Federal government (FED). This TIA Standard is being promulgated and will be maintained by the TR-8.5 Signaling and Data Transmission subcommittee, and working groups under the sponsorshi

22、p of the Telecommunications Industry Association. This document has been published as a TIA Standard because it contains useful technical information on emerging digital techniques for Land Mobile Radio Service. In particular, it describes the wideband air interface radio channel coding technology.

23、Generally, the wideband air interface was developed by TIA TR-8.5 to be consistent with the Statement of Requirements adopted by the National Coordination Committees Interoperability Subcommittee, WG6 Wideband Data. This document derives from the primary user needs document that will be “APCO Projec

24、t 25/34 Statement of Requirements (P34SOR)”. This radio channel coding specification provides a standard for the definition of coding and interleaving of high-speed digital information over 50, 100, and 150 kHz bandwidth physical radio media. The TIA makes no claims as to the applicability of the in

25、formation contained in this document for any purpose although it is believed that the information will prove to be invaluable to designers of wideband data compliant equipment. Some aspects of the specifications contained in this document may not have been fully operationally tested; however, a grea

26、t deal of time and good faith effort has been invested in the preparation of this document to ensure the accuracy of the information it contains. While all reasonable efforts have been made to ensure the accuracy of this document, it should be understood that significant work remains in fully develo

27、ping the standard series and this document will be updated as necessary. This document uses the mathematical notation of to indicate multiplication. TIA-902.BAAD-A WAI SAM CHC Specification Patent Identification The readers attention is called to the possibility that compliance with this document ma

28、y require the use of one or more inventions covered by patent rights. By publication of this document, no position is taken with respect to the validity of those claims or any patent rights in connection therewith. The patent holders so far identified have, we believe, filed statements of willingnes

29、s to grant licenses under those rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to obtain such licenses. The following patent holders and patents have been identified in accordance with the TIA intellectual property rights policy: Motorola US 5,533,004; Method

30、for providing and selecting amongst multiple data rates in a time division multiplexed system TIA shall not be responsible for identifying patents for which licenses may be required by this document or for conducting inquiries into the legal validity or scope of those patents that are brought to its

31、 attention. WAI SAM CHC Specification TIA-902.BAAD-A Table of Contents 1. SCOPE . 1 1.1 FORWARD ERROR CORRECTION . 1 1.2 INTERLEAVING. 2 2. RADIO CHANNEL CODING. 3 2.1 BLOCK PRODUCT CODES 3 2.2 INFORMATION SERIALIZATION . 8 2.3 CONSTITUENT BLOCK CODES 8 2.3.1 Outbound Channel Constituent Codes 11 2.

32、3.2 Direct Channel Constituent Codes . 12 2.3.3 Inbound Channel Constituent Codes 13 2.4 BIT INTERLEAVING 14 2.5 SLOT INTERLEAVING 16 3. REFERENCES 47 4. ABBREVIATIONS. 48 List of Figures FIGURE 1. WIDEBAND AIR INTERFACE WITH RADIO CHANNEL CODING. 1 FIGURE 2. REFERENCE TRANSMITTER CONFIGURATION . 1

33、FIGURE 3. REFERENCE RECEIVER CONFIGURATION 1 FIGURE 4. RADIO CHANNEL ENCODING SCHEMATIC DIAGRAM 2 FIGURE 5. BLOCK CODE CONSTRUCTION 4 FIGURE 6. CONSTITUENT PRODUCT CODE GENERATOR MATRIX CONSTRUCTION 12 TIA-902.BAAD-A WAI SAM CHC Specification List of Tables TABLE 2-1 OUTBOUND BLOCK PRODUCT CODE PARA

34、METERS 5 TABLE 2-2 DIRECT MODE BLOCK PRODUCT CODE PARAMETERS 6 TABLE 2-3 INBOUND BLOCK PRODUCT CODE PARAMETERS 7 TABLE 2-4 (15,11,3) HAMMING CODE GENERATOR MATRIX . 9 TABLE 2-5 (31,26,3) HAMMING CODE GENERATOR MATRIX . 9 TABLE 2-6 (64,57,4) HAMMING CODE PARITY MATRIX . 10 TABLE 2-7 OUTBOUND CHANNEL

35、CONSTITUENT CODE FACTORS . 11 TABLE 2-8 DIRECT CHANNEL CONSTITUENT CODE FACTORS 13 TABLE 2-9 INBOUND CHANNEL CONSTITUENT CODE FACTORS. 13 TABLE 2-10 MULTIPLICATIVE INVERSE OF 11 15 TABLE 2-11 OUTBOUND 50 KHZ SLOT INTERLEAVE 17 TABLE 2-12 OUTBOUND 50 KHZ BLOCK SYMBOL ORDER . 18 TABLE 2-13 OUTBOUND 10

36、0 KHZ SLOT INTERLEAVE 19 TABLE 2-14 OUTBOUND 100 KHZ BLOCK SYMBOL ORDER . 21 TABLE 2-15 OUTBOUND 150 KHZ SLOT INTERLEAVE 22 TABLE 2-16 OUTBOUND 150 KHZ BLOCK SYMBOL ORDER . 25 TABLE 2-17 DIRECT 50 KHZ SLOT INTERLEAVE 27 TABLE 2-18 DIRECT 50 KHZ BLOCK SYMBOL ORDER . 28 TABLE 2-19 DIRECT 100 KHZ SLOT

37、INTERLEAVE 29 TABLE 2-20 DIRECT 100 KHZ BLOCK SYMBOL ORDER . 31 TABLE 2-21 DIRECT 150 KHZ SLOT INTERLEAVE 32 TABLE 2-22 DIRECT 150 KHZ BLOCK SYMBOL ORDER . 35 TABLE 2-23 INBOUND 50 KHZ SLOT INTERLEAVE . 37 TABLE 2-24 INBOUND 50 KHZ BLOCK SYMBOL ORDER 38 TABLE 2-25 INBOUND 100 KHZ SLOT INTERLEAVE . 3

38、9 TABLE 2-26 INBOUND 100 KHZ BLOCK SYMBOL ORDER 41 TABLE 2-27 INBOUND 150 KHZ SLOT INTERLEAVE . 42 TABLE 2-28 INBOUND 150 KHZ BLOCK SYMBOL ORDER 45 Document Revision History Version Date Description Issue O 7-Mar-2002 Initial version of block product codes for SAM. Issue A 6-May-2002 Added foreword,

39、 patent identification, some tables. Issue B 2-Aug-2002 Resolved ballot comments. Issue C 11-Mar-2003 Changed MCBK to MCIP and revised block codes. Issue D 28-July-2003 Revisions from PN-3-0080-URV Ballot Issue E 3-Sep-2003 Final Edits for TIA Publication WAI SAM CHC Specification TIA-902.BAAD-A 11.

40、 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 CodingModulationMAC/RLARadio Channel CodingMo

41、dulationTransmitter ReceiverFigure 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 transmitter, and

42、 Figure 3 shows the reference configuration of a WAI receiver. One Wideband Air Interface is defined for Scalable Advanced Modulation (SAM) in reference 1. These diagrams show the major processing blocks between the radio channel coding and physical layers. These functions are common across all WAI

43、configuration modes and except for scrambling they are described here. The scrambler and forward error correction (FEC) coding function blocks operate at a bit level while the interleaver and modulator operate at a symbol level. Scrambler Coder Interleaver ModulatorFigure 2. Reference Transmitter Co

44、nfiguration Descrambler 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 Layer Specification given in reference 2. The other functions of forward error co

45、rrection, interleaving, and mapping to physical layer modulation symbols are defined in the following sections. 1.1 Forward Error Correction Forward error correction codes (FECs) allow the detection and correction of symbol errors introduced on the error prone radio channel. The objective of FEC is

46、to correct all channel errors, but this cannot be realized if the signal to noise ratio is too low. Cyclical Redundancy Codes (CRCs) are therefore included in TIA-902.BAAD-A WAI SAM CHC Specification 2MAC Header Blocks (MHBKs) and MAC Code Interface Parts (MCIPs). The CRCs are used to detect errors

47、in radio channel transmissions within the MAC layer that could not be corrected by the FEC. 1.2 Interleaving Interleaving works in conjunction with the FEC to spread sequentially coded symbols in time and frequency. With interleaving the FEC can better correct radio channel symbol errors that are co

48、ncentrated in bursts in either the time or frequency domains. The interleaving functions distribute bits in code words within a basic block. They also distribute the modulation symbols within basic blocks within a time slot. Scrambled Data InputsBlock Product CodesMACHeaderMAC CodeInterface PartMACH

49、eaderBasicBlock BBasicBlock ESeparate into Basic BlocksBasicBlock CBasicBlock FBasicBlock ABasicBlock DMACHeaderBasicBlock BBasicBlock EBasicBlock CBasicBlock FBasicBlock ABasicBlock DBit InterleaveSymbol Interleaveinto the Slot with Pilot and Sync SymbolsMAC CodeInterface PartFigure 4. Radio Channel Encoding Schematic Diagram WAI SAM CHC Specification TIA-902.BAAD-A 32. Radio Channel Coding The operations for radio channel encoding are shown in figure 4. The figure shows logical data units from the MAC/RLA sublayer that are encoded with block product codes. These are the