JP4606852B2 - ビタービデコーダーを簡素化する方法 - Google Patents
ビタービデコーダーを簡素化する方法 Download PDFInfo
- Publication number
- JP4606852B2 JP4606852B2 JP2004333261A JP2004333261A JP4606852B2 JP 4606852 B2 JP4606852 B2 JP 4606852B2 JP 2004333261 A JP2004333261 A JP 2004333261A JP 2004333261 A JP2004333261 A JP 2004333261A JP 4606852 B2 JP4606852 B2 JP 4606852B2
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- JP
- Japan
- Prior art keywords
- viterbi decoder
- signal
- register selector
- module
- partial response
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- H03M13/63—Joint error correction and other techniques
- H03M13/6343—Error control coding in combination with techniques for partial response channels, e.g. recording
-
- 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
- H03M13/3961—Arrangements of methods for branch or transition metric calculation
-
- 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
- H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
-
- 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
- H03M13/6502—Reduction of hardware complexity or efficient processing
Description
P(t,S00)=min{(P(t-1,S00)+B(t,-4)),(P(t-1,S10)+B(t,-2))}
P(t,S01)=P(t-1,S00)+B(t,-2)
P(t,S10)=P(t-1,S11)+B(t,-2)
P(t,S11)=min{(P(t-1,S01)+B(t,2)),(P(t-1,S11)+B(t,4))}
S0=0 for (P(t-1,S00)+B(t,-4))<(P(t-1,S10)+B(t,-2))
=1 for otherwise
S1=0 for (P(t-1,S01)+B(t,2))<(P(t-1,S11)+B(t,4))
=1 for otherwise
そのうちP(t)はパスメトリックであり、B(t)はパス値である。
12 ブランチメトリックユニット
14 ACSユニット
16 パスメトリックメモリーモジュール
18、21、80 パスメモリーモジュール
20 出力セレクター
22、82 レジスター・セレクターモジュール
24 レジスター
26、28 セレクター
Claims (5)
- ビタービデコーダーを簡素化する方法であって、
前記ビタービデコーダーに入力される所定のパーシャルレスポンスを取得して、当該所定のパーシャルレスポンスのタップ数によって余剰レジスター・セレクターモジュールの数量を定めるステップであって、前記余剰レジスター・セレクターモジュールの数量は、前記所定のパーシャルレスポンスのタップ数から所定値を引いて定められ、前記所定値の最小値は2であり、前記所定値の最大値は前記所定のパーシャルレスポンスのタップ数から1を引いて得た値であるステップと、
前記余剰レジスター・セレクターモジュールの出力信号を分析し、前記ビタービデコーダーのパスメモリーモジュールに入力される初期入力信号を定めるステップと、
前記所定のパーシャルレスポンス、トレリスダイアグラム及び前記初期入力信号によって前記ビタービデコーダーで系列データをビタービ復号化するステップと、
を含むことを特徴とするビタービデコーダーを簡素化する方法。 - 前記初期入力信号は前記余剰レジスター・セレクターモジュールの出力信号であることを特徴とする請求項1のビタービデコーダーを簡素化する方法。
- 前記ビタービデコーダーはHD−DVDドライブに設けられ、前記系列データをビタービ復号化するものであることを特徴とする請求項1のビタービデコーダーを簡素化する方法。
- 前記ビタービデコーダーの前記パスメモリーモジュールは17個のレジスター・セレクターモジュールを含むことを特徴とする請求項3のビタービデコーダーを簡素化する方法。
- 前記ビタービデコーダーにおける前記パスメモリーモジュールの第1個目のレジスター・セレクターモジュールの初期入力信号は(0、0、0、0、0、1、1、1、1、1)であることを特徴とする請求項4のビタービデコーダーを簡素化する方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW093121611A TWI285475B (en) | 2004-07-20 | 2004-07-20 | Method for simplifying a Viterbi decoder |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006031905A JP2006031905A (ja) | 2006-02-02 |
JP4606852B2 true JP4606852B2 (ja) | 2011-01-05 |
Family
ID=35658683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004333261A Expired - Fee Related JP4606852B2 (ja) | 2004-07-20 | 2004-11-17 | ビタービデコーダーを簡素化する方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7533329B2 (ja) |
JP (1) | JP4606852B2 (ja) |
TW (1) | TWI285475B (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008112543A (ja) * | 2006-10-31 | 2008-05-15 | Toshiba Corp | デジタルデータ復号装置およびデジタルデータ復号方法 |
US9621404B2 (en) | 2011-09-24 | 2017-04-11 | Elwha Llc | Behavioral fingerprinting with social networking |
US9348985B2 (en) * | 2011-11-23 | 2016-05-24 | Elwha Llc | Behavioral fingerprint controlled automatic task determination |
US9729549B2 (en) | 2011-09-24 | 2017-08-08 | Elwha Llc | Behavioral fingerprinting with adaptive development |
US9825967B2 (en) | 2011-09-24 | 2017-11-21 | Elwha Llc | Behavioral fingerprinting via social networking interaction |
US9298900B2 (en) | 2011-09-24 | 2016-03-29 | Elwha Llc | Behavioral fingerprinting via inferred personal relation |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05335972A (ja) * | 1992-05-27 | 1993-12-17 | Nec Corp | ビタビ復号器 |
US5724390A (en) * | 1994-03-02 | 1998-03-03 | Lucent Technologies Inc. | MLSE before derotation and after derotation |
JP2669350B2 (ja) * | 1994-07-07 | 1997-10-27 | 日本電気株式会社 | 状態数可変最尤系列推定器 |
EP0750306B1 (en) * | 1995-06-22 | 2002-06-05 | Matsushita Electric Industrial Co., Ltd. | A method of maximum likelihood decoding and a digital information playback apparatus |
JP3266052B2 (ja) * | 1997-06-06 | 2002-03-18 | 日本電気株式会社 | データ受信装置 |
US6097769A (en) * | 1998-02-10 | 2000-08-01 | Lucent Technologies Inc. | Viterbi detector using path memory controlled by best state information |
US6603722B1 (en) * | 1998-05-18 | 2003-08-05 | Fujitsu Limited | System for reproducing data with increased accuracy by reducing difference between sampled and expected values |
JP2003506809A (ja) * | 1999-08-02 | 2003-02-18 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 検出装置 |
US7225393B2 (en) * | 1999-10-01 | 2007-05-29 | Matsushita Electric Industrial Co., Ltd. | Viterbi decoder and Viterbi decoding method |
US6744814B1 (en) * | 2000-03-31 | 2004-06-01 | Agere Systems Inc. | Method and apparatus for reduced state sequence estimation with tap-selectable decision-feedback |
JP2002050134A (ja) * | 2000-05-22 | 2002-02-15 | Fujitsu Ltd | データ再生装置 |
JP4115690B2 (ja) * | 2001-10-15 | 2008-07-09 | 富士通株式会社 | データ記録装置 |
US7194674B2 (en) * | 2002-07-29 | 2007-03-20 | Sharp Kabushiki Kaisha | Adaptive waveform equalization for viterbi-decodable signal and signal quality evaluation of viterbi-decodable signal |
TW595117B (en) * | 2003-06-20 | 2004-06-21 | Univ Nat Chiao Tung | Viterbi decoder algorithm applied for memory basis |
-
2004
- 2004-07-20 TW TW093121611A patent/TWI285475B/zh not_active IP Right Cessation
- 2004-11-17 JP JP2004333261A patent/JP4606852B2/ja not_active Expired - Fee Related
-
2005
- 2005-07-19 US US11/161,015 patent/US7533329B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20060020876A1 (en) | 2006-01-26 |
JP2006031905A (ja) | 2006-02-02 |
TW200605516A (en) | 2006-02-01 |
TWI285475B (en) | 2007-08-11 |
US7533329B2 (en) | 2009-05-12 |
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