ATE323341T1 - Log-map dekodierung - Google Patents
Log-map dekodierungInfo
- Publication number
- ATE323341T1 ATE323341T1 AT01401649T AT01401649T ATE323341T1 AT E323341 T1 ATE323341 T1 AT E323341T1 AT 01401649 T AT01401649 T AT 01401649T AT 01401649 T AT01401649 T AT 01401649T AT E323341 T1 ATE323341 T1 AT E323341T1
- Authority
- AT
- Austria
- Prior art keywords
- log
- unit
- dsp
- map
- likelihood ratio
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/3905—Maximum a posteriori probability [MAP] decoding or approximations thereof based on trellis or lattice decoding, e.g. forward-backward algorithm, log-MAP decoding, max-log-MAP decoding
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/3905—Maximum a posteriori probability [MAP] decoding or approximations thereof based on trellis or lattice decoding, e.g. forward-backward algorithm, log-MAP decoding, max-log-MAP decoding
- H03M13/3922—Add-Compare-Select [ACS] operation in forward or backward recursions
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/3905—Maximum a posteriori probability [MAP] decoding or approximations thereof based on trellis or lattice decoding, e.g. forward-backward algorithm, log-MAP decoding, max-log-MAP decoding
- H03M13/3927—Log-Likelihood Ratio [LLR] computation by combination of forward and backward metrics into LLRs
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6569—Implementation on processors, e.g. DSPs, or software implementations
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6572—Implementations using a tree structure, e.g. implementations in which the complexity is reduced by a tree structure from O(n) to O (log(n))
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6577—Representation or format of variables, register sizes or word-lengths and quantization
- H03M13/6583—Normalization other than scaling, e.g. by subtraction
Landscapes
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computing Systems (AREA)
- Error Detection And Correction (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Debugging And Monitoring (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01401649A EP1271789B1 (de) | 2001-06-21 | 2001-06-21 | Log-MAP Dekodierung |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE323341T1 true ATE323341T1 (de) | 2006-04-15 |
Family
ID=8182777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT01401649T ATE323341T1 (de) | 2001-06-21 | 2001-06-21 | Log-map dekodierung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1271789B1 (de) |
JP (1) | JP4049620B2 (de) |
AT (1) | ATE323341T1 (de) |
DE (1) | DE60118716T2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7043682B1 (en) | 2002-02-05 | 2006-05-09 | Arc International | Method and apparatus for implementing decode operations in a data processor |
US6718504B1 (en) | 2002-06-05 | 2004-04-06 | Arc International | Method and apparatus for implementing a data processor adapted for turbo decoding |
GB0504483D0 (en) | 2005-03-03 | 2005-04-13 | Ttp Communications Ltd | Trellis calculations |
CN102142849B (zh) * | 2011-02-15 | 2014-07-30 | 无锡物联网产业研究院 | 一种维特比译码方法及维特比译码器 |
CN113824452B (zh) * | 2021-11-23 | 2022-04-12 | 南京创芯慧联技术有限公司 | 基于网格图的译码方法、分量译码器和信道译码器 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4802174A (en) * | 1986-02-19 | 1989-01-31 | Sony Corporation | Viterbi decoder with detection of synchronous or asynchronous states |
US5295142A (en) * | 1989-07-18 | 1994-03-15 | Sony Corporation | Viterbi decoder |
FR2669445B1 (fr) * | 1990-11-15 | 1993-01-08 | Alcatel Radiotelephone | Dispositif prevu pour le traitement de l'algorithme de viterbi comprenant un processeur et un operateur specialise. |
US5442627A (en) * | 1993-06-24 | 1995-08-15 | Qualcomm Incorporated | Noncoherent receiver employing a dual-maxima metric generation process |
ATE298161T1 (de) * | 1998-10-30 | 2005-07-15 | Broadcom Corp | Übertragung mit nichtganzzahligen datenraten unter verwendung multiplexierter konstellationen |
JP2002533991A (ja) * | 1998-12-18 | 2002-10-08 | テレフォンアクチーボラゲット エル エム エリクソン(パブル) | 高速帰納的最大復号化のための方法及び装置 |
-
2001
- 2001-06-21 AT AT01401649T patent/ATE323341T1/de not_active IP Right Cessation
- 2001-06-21 EP EP01401649A patent/EP1271789B1/de not_active Expired - Lifetime
- 2001-06-21 DE DE60118716T patent/DE60118716T2/de not_active Expired - Fee Related
-
2002
- 2002-06-20 JP JP2002179985A patent/JP4049620B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE60118716D1 (de) | 2006-05-24 |
JP2003060512A (ja) | 2003-02-28 |
EP1271789B1 (de) | 2006-04-12 |
DE60118716T2 (de) | 2007-02-22 |
EP1271789A1 (de) | 2003-01-02 |
JP4049620B2 (ja) | 2008-02-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |