JP4227481B2 - 復号装置および復号方法 - Google Patents
復号装置および復号方法 Download PDFInfo
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- JP4227481B2 JP4227481B2 JP2003273378A JP2003273378A JP4227481B2 JP 4227481 B2 JP4227481 B2 JP 4227481B2 JP 2003273378 A JP2003273378 A JP 2003273378A JP 2003273378 A JP2003273378 A JP 2003273378A JP 4227481 B2 JP4227481 B2 JP 4227481B2
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- 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
-
- 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
- H03M13/395—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using a collapsed trellis, e.g. M-step algorithm, radix-n architectures with n>2
-
- 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
- H03M13/29—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 combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
-
- 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
- H03M13/29—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 combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
- H03M13/2957—Turbo codes and 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
- H03M13/3723—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35 using means or methods for the initialisation of the decoder
-
- 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
- H03M13/3972—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using sliding window techniques or parallel windows
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- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Error Detection And Correction (AREA)
- Detection And Correction Of Errors (AREA)
Description
Andrew J. Viterbi, "An Intuitive Justification and a Simplified Implementation of the MAP Decoder for Convolutional Codes", IEEE J. Sel. Areas Commun., vol.16, no.2, pp.260-264, Feb.1998
110 復号器
111 移行確率演算部
112 後方確率演算部
113 前方確率演算部
114 記憶部
115 尤度演算部
130 復号器
140、150 デインタリーバ
160 硬判定部
170 誤り検出部
Claims (6)
- 所定サイズのウィンドウに対して複数の処理系統で並列に復号演算を行う、スライディングウィンドウおよびMax−LOG−MAPアルゴリズムが適用される復号装置であって、
前記ウィンドウ内において前記複数の処理系統の各々で当該複数の処理系統数だけ前の演算対象シンボルに係る前方確率から現時点の演算対象シンボルに係る前方確率を前記複数の処理系統数のシンボル間隔で順次演算し、各処理系統の前記現時点の演算対象シンボルが1シンボルずつ順々にずれている前方確率演算手段と、
前記ウィンドウ内において前記複数の処理系統の各々で当該複数の処理系統数だけ後の演算対象シンボルに係る後方確率から現時点の演算対象シンボルに係る後方確率を前記複数の処理系統数のシンボル間隔で順次演算し、各処理系統の前記現時点の演算対象シンボルが1シンボルずつ順々にずれている後方確率演算手段と、
前記前方確率および前記後方確率を用いて各処理系統で並列に尤度情報を演算する尤度演算手段と、
を有する復号装置。 - 前記後方確率演算手段は、
現時点で演算対象であるウィンドウより後の時点のデータをトレーニングデータとして現時点の演算対象シンボルに係る後方確率を演算する請求項1記載の復号装置。 - 前記後方確率演算手段にて用いられる前記トレーニングデータは、
前記複数の処理系統で共通する請求項2記載の復号装置。 - 請求項1から請求項3のいずれかに記載の復号装置を有することを特徴とする基地局装置。
- 請求項1から請求項3のいずれかに記載の復号装置を有することを特徴とする移動局装置。
- 所定サイズのウィンドウに対して複数の処理系統で並列に復号演算を行う、スライディングウィンドウおよびMax−LOG−MAPアルゴリズムが適用される復号方法であって、
前記ウィンドウ内において前記複数の処理系統の各々で当該複数の処理系統数だけ後の演算対象シンボルに係る後方確率から現時点の演算対象シンボルに係る後方確率を前記複数の処理系統数のシンボル間隔で順次演算し、各処理系統の前記現時点の演算対象シンボルが1シンボルずつ順々にずれている後方確率演算ステップと、
前記ウィンドウ内において前記複数の処理系統の各々で当該複数の処理系統数だけ前の演算対象シンボルに係る前方確率から現時点の演算対象シンボルに係る前方確率を前記複数の処理系統数のシンボル間隔で順次演算し、各処理系統の前記現時点の演算対象シンボルが1シンボルずつ順々にずれている前方確率演算ステップと、
前記前方確率が演算されるごとに前記前方確率および前記後方確率を用いて各処理系統で並列に尤度情報を演算する尤度演算ステップと、
を有する復号方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003273378A JP4227481B2 (ja) | 2003-07-11 | 2003-07-11 | 復号装置および復号方法 |
PCT/JP2004/009846 WO2005006564A1 (ja) | 2003-07-11 | 2004-07-09 | 復号装置および復号方法 |
EP04747314A EP1655846B1 (en) | 2003-07-11 | 2004-07-09 | Decoding apparatus and decoding method |
DE602004012417T DE602004012417T2 (de) | 2003-07-11 | 2004-07-09 | Dekodierungsvorrichtung und dekodierungsverfahren |
US10/563,559 US7539256B2 (en) | 2003-07-11 | 2004-07-09 | Decoding device and decoding method |
KR1020067000682A KR100671619B1 (ko) | 2003-07-11 | 2004-07-09 | 복호 장치 및 복호 방법 |
CNB2004800199880A CN100547935C (zh) | 2003-07-11 | 2004-07-09 | 解码装置及解码方法 |
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JP2003273378A JP4227481B2 (ja) | 2003-07-11 | 2003-07-11 | 復号装置および復号方法 |
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JP2005033705A JP2005033705A (ja) | 2005-02-03 |
JP4227481B2 true JP4227481B2 (ja) | 2009-02-18 |
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JP2003273378A Expired - Fee Related JP4227481B2 (ja) | 2003-07-11 | 2003-07-11 | 復号装置および復号方法 |
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Country | Link |
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US (1) | US7539256B2 (ja) |
EP (1) | EP1655846B1 (ja) |
JP (1) | JP4227481B2 (ja) |
KR (1) | KR100671619B1 (ja) |
CN (1) | CN100547935C (ja) |
DE (1) | DE602004012417T2 (ja) |
WO (1) | WO2005006564A1 (ja) |
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US7571683B2 (en) * | 2001-03-27 | 2009-08-11 | General Electric Company | Electrical energy capture system with circuitry for blocking flow of undesirable electrical currents therein |
US7929646B2 (en) * | 2006-01-27 | 2011-04-19 | Qualcomm Incorporated | Map decoder with bidirectional sliding window architecture |
US8194760B2 (en) * | 2006-06-01 | 2012-06-05 | Ntt Docomo, Inc. | Method and apparatus for distributed space-time coding in wireless radio networks |
US8027407B2 (en) * | 2006-11-06 | 2011-09-27 | Ntt Docomo, Inc. | Method and apparatus for asynchronous space-time coded transmission from multiple base stations over wireless radio networks |
US8059732B2 (en) | 2006-11-28 | 2011-11-15 | Ntt Docomo, Inc. | Method and apparatus for wideband transmission from multiple non-collocated base stations over wireless radio networks |
US8861356B2 (en) * | 2007-03-13 | 2014-10-14 | Ntt Docomo, Inc. | Method and apparatus for prioritized information delivery with network coding over time-varying network topologies |
US20090285323A1 (en) * | 2008-05-15 | 2009-11-19 | Sundberg Carl-Erik W | Adaptive soft output m-algorithm receiver structures |
US8064548B2 (en) * | 2007-05-18 | 2011-11-22 | Ntt Docomo, Inc. | Adaptive MaxLogMAP-type receiver structures |
US20090075686A1 (en) * | 2007-09-19 | 2009-03-19 | Gomadam Krishna S | Method and apparatus for wideband transmission based on multi-user mimo and two-way training |
US8325840B2 (en) * | 2008-02-25 | 2012-12-04 | Ntt Docomo, Inc. | Tree position adaptive soft output M-algorithm receiver structures |
US8279954B2 (en) * | 2008-03-06 | 2012-10-02 | Ntt Docomo, Inc. | Adaptive forward-backward soft output M-algorithm receiver structures |
US8565329B2 (en) * | 2008-06-03 | 2013-10-22 | Ntt Docomo, Inc. | Soft output M-algorithm receiver structures with generalized survivor selection criteria for MIMO systems |
US8229443B2 (en) * | 2008-08-13 | 2012-07-24 | Ntt Docomo, Inc. | Method of combined user and coordination pattern scheduling over varying antenna and base-station coordination patterns in a multi-cell environment |
US8451951B2 (en) * | 2008-08-15 | 2013-05-28 | Ntt Docomo, Inc. | Channel classification and rate adaptation for SU-MIMO systems |
US8705484B2 (en) * | 2008-08-15 | 2014-04-22 | Ntt Docomo, Inc. | Method for varying transmit power patterns in a multi-cell environment |
US8542640B2 (en) * | 2008-08-28 | 2013-09-24 | Ntt Docomo, Inc. | Inter-cell approach to operating wireless beam-forming and user selection/scheduling in multi-cell environments based on limited signaling between patterns of subsets of cells |
US8855221B2 (en) * | 2008-09-15 | 2014-10-07 | Ntt Docomo, Inc. | Method and apparatus for iterative receiver structures for OFDM/MIMO systems with bit interleaved coded modulation |
US9048977B2 (en) * | 2009-05-05 | 2015-06-02 | Ntt Docomo, Inc. | Receiver terminal driven joint encoder and decoder mode adaptation for SU-MIMO systems |
US8514961B2 (en) * | 2010-02-04 | 2013-08-20 | Ntt Docomo, Inc. | Method and apparatus for distributed space-time coding in wireless radio networks |
US20130142057A1 (en) * | 2011-12-01 | 2013-06-06 | Broadcom Corporation | Control Channel Acquisition |
KR101674724B1 (ko) | 2014-08-25 | 2016-11-09 | 주식회사 엔케이 | 단열블록 고정턱이 형성된 서포트 구조체 및 이를 이용한 2중벽 탱크 |
US20190064223A1 (en) * | 2017-08-25 | 2019-02-28 | Keysight Technologies, Inc. | Method and Apparatus for Detecting the Start of an Event in the Presence of Noise |
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EP1156588B1 (en) * | 1999-03-01 | 2007-05-09 | Fujitsu Limited | Method and apparatus for maximum a posteriori probability decoding |
JP3244121B2 (ja) | 1999-04-07 | 2002-01-07 | 株式会社ワイ・アール・ピー移動通信基盤技術研究所 | 復号装置 |
US6980605B2 (en) * | 2000-01-31 | 2005-12-27 | Alan Gatherer | MAP decoding with parallelized sliding window processing |
FI109162B (fi) * | 2000-06-30 | 2002-05-31 | Nokia Corp | Menetelmä ja järjestely konvoluutiokoodatun koodisanan dekoodaamiseksi |
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FI20020108A0 (fi) * | 2002-01-21 | 2002-01-21 | Nokia Corp | Menetelmõ ja laite polkumetriikoiden muodostamiseksi trelliksessõ |
US7246295B2 (en) * | 2003-04-14 | 2007-07-17 | Agere Systems Inc. | Turbo decoder employing simplified log-map decoding |
JP2005167513A (ja) * | 2003-12-01 | 2005-06-23 | Matsushita Electric Ind Co Ltd | 復号装置及び復号方法 |
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- 2003-07-11 JP JP2003273378A patent/JP4227481B2/ja not_active Expired - Fee Related
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- 2004-07-09 KR KR1020067000682A patent/KR100671619B1/ko active IP Right Grant
- 2004-07-09 CN CNB2004800199880A patent/CN100547935C/zh not_active Expired - Lifetime
- 2004-07-09 DE DE602004012417T patent/DE602004012417T2/de not_active Expired - Lifetime
- 2004-07-09 EP EP04747314A patent/EP1655846B1/en not_active Expired - Fee Related
- 2004-07-09 US US10/563,559 patent/US7539256B2/en active Active
- 2004-07-09 WO PCT/JP2004/009846 patent/WO2005006564A1/ja active IP Right Grant
Also Published As
Publication number | Publication date |
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US20060176945A1 (en) | 2006-08-10 |
US7539256B2 (en) | 2009-05-26 |
EP1655846A1 (en) | 2006-05-10 |
WO2005006564A1 (ja) | 2005-01-20 |
EP1655846A4 (en) | 2006-07-19 |
DE602004012417D1 (de) | 2008-04-24 |
EP1655846B1 (en) | 2008-03-12 |
CN1823474A (zh) | 2006-08-23 |
DE602004012417T2 (de) | 2008-06-19 |
KR20060035743A (ko) | 2006-04-26 |
KR100671619B1 (ko) | 2007-01-19 |
CN100547935C (zh) | 2009-10-07 |
JP2005033705A (ja) | 2005-02-03 |
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