JP2009027470A - 受信装置 - Google Patents
受信装置 Download PDFInfo
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- JP2009027470A JP2009027470A JP2007188688A JP2007188688A JP2009027470A JP 2009027470 A JP2009027470 A JP 2009027470A JP 2007188688 A JP2007188688 A JP 2007188688A JP 2007188688 A JP2007188688 A JP 2007188688A JP 2009027470 A JP2009027470 A JP 2009027470A
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- 238000012545 processing Methods 0.000 claims abstract description 87
- 238000006243 chemical reaction Methods 0.000 claims abstract description 76
- 230000005540 biological transmission Effects 0.000 claims abstract description 45
- 238000013139 quantization Methods 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims 1
- 230000002542 deteriorative effect Effects 0.000 abstract description 2
- 238000012937 correction Methods 0.000 description 49
- 238000000034 method Methods 0.000 description 28
- 238000001514 detection method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
- H04L25/067—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing soft decisions, i.e. decisions together with an estimate of reliability
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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
- H03M13/3994—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using state pinning or decision forcing, i.e. the decoded sequence is forced through a particular trellis state or a particular set of trellis states or a particular decoded symbol
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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
- H03M13/45—Soft decoding, i.e. using symbol reliability information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0052—Realisations of complexity reduction techniques, e.g. pipelining or use of look-up tables
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Circuits Of Receivers In General (AREA)
- Error Detection And Correction (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
【解決手段】 受信装置伝送信号を復調して所定ビット数の復調出力を出力する復調手段15と、前記伝送信号の信頼度を算出し信頼度情報を出力する信頼度算出手段16と、前記信頼度情報に基づいて前記復調出力のビット数を低減させると共に、ビット数が低減された復調出力と前記信頼度情報とを多重して出力する変換処理手段17と、前記変換処理手段の出力をデ・インターリーブ処理するデ・インターリーブ手段18とを具備したことを特徴とする。
【選択図】図1
Description
Claims (5)
- 伝送信号を復調して所定ビット数の復調出力を出力する復調手段と、
前記伝送信号の信頼度を算出し信頼度情報を出力する信頼度算出手段と、
前記信頼度情報に基づいて前記復調出力のビット数を低減させると共に、ビット数が低減された復調出力と前記信頼度情報とを多重して出力する変換処理手段と、
前記変換処理手段の出力をデ・インターリーブ処理するデ・インターリーブ手段と
を具備したことを特徴とする受信装置。 - 前記変換処理手段は、前記復調出力の量子化レベルを前記信頼度に応じて変化させることで、前記復調出力のビット数を低減させることを特徴とする請求項1に記載の受信装置。
- 前記変換処理手段は、前記信頼度情報に基づいて前記信頼度情報のビット数を低減させた後、ビット数が低減された前記信頼度情報と前記復調出力とを多重することを特徴とする請求項1又は2のいずれか一方に記載の受信装置。
- 前記変換処理手段は、信頼度が高い程前記信頼度情報のビット数を低減させることにより、前記信頼度情報と復調出力との和のビット数を信頼度に拘わらず一定にすることを特徴とする請求項3に記載の受信装置。
- 前記変換処理手段は、前記伝送信号を伝送する伝送路の状態に基づいて、前記信頼度情報と前記復調出力のビット数との関係を変化させることを特徴とする請求項1乃至4のいずれか1つに記載の受信装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007188688A JP4823160B2 (ja) | 2007-07-19 | 2007-07-19 | 受信装置 |
US12/174,916 US8259853B2 (en) | 2007-07-19 | 2008-07-17 | Digital broadcast receiving device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007188688A JP4823160B2 (ja) | 2007-07-19 | 2007-07-19 | 受信装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009027470A true JP2009027470A (ja) | 2009-02-05 |
JP4823160B2 JP4823160B2 (ja) | 2011-11-24 |
Family
ID=40264832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007188688A Active JP4823160B2 (ja) | 2007-07-19 | 2007-07-19 | 受信装置 |
Country Status (2)
Country | Link |
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US (1) | US8259853B2 (ja) |
JP (1) | JP4823160B2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2249532A2 (en) | 2009-05-08 | 2010-11-10 | Mitsubishi Electric Corporation | Optical receiving apparatus and optical receiving method |
JP2013504975A (ja) * | 2009-09-16 | 2013-02-07 | インテル・コーポレーション | ハイブリッド自動再送要求(harq)プロトコルのスループットを高める方法およびシステム |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2202894B1 (en) * | 2008-12-23 | 2011-11-02 | Ntt Docomo, Inc. | Relay station for a mobile communication system |
US8713414B2 (en) * | 2012-01-26 | 2014-04-29 | Telefonaktiebolager L M Ericsson (Publ) | Method and apparatus for soft information transfer between constituent processor circuits in a soft-value processing apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003188848A (ja) * | 2001-12-18 | 2003-07-04 | Fujitsu Ltd | Ofdm受信装置及び放送受信装置 |
JP2005286504A (ja) * | 2004-03-29 | 2005-10-13 | Sanyo Electric Co Ltd | デジタル信号受信装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6621792B1 (en) * | 1999-02-23 | 2003-09-16 | Avaya Technology Corp. | Computationally-efficient traffic shaper |
US6754503B1 (en) * | 2000-10-02 | 2004-06-22 | Koninklijke Philips Electronics | Method for adaptively selecting a soft symbol for a subsequent operation a communication device |
-
2007
- 2007-07-19 JP JP2007188688A patent/JP4823160B2/ja active Active
-
2008
- 2008-07-17 US US12/174,916 patent/US8259853B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003188848A (ja) * | 2001-12-18 | 2003-07-04 | Fujitsu Ltd | Ofdm受信装置及び放送受信装置 |
JP2005286504A (ja) * | 2004-03-29 | 2005-10-13 | Sanyo Electric Co Ltd | デジタル信号受信装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2249532A2 (en) | 2009-05-08 | 2010-11-10 | Mitsubishi Electric Corporation | Optical receiving apparatus and optical receiving method |
US8645806B2 (en) | 2009-05-08 | 2014-02-04 | Mitsubishi Electric Corporation | Optical receiving apparatus and optical receiving method |
JP2013504975A (ja) * | 2009-09-16 | 2013-02-07 | インテル・コーポレーション | ハイブリッド自動再送要求(harq)プロトコルのスループットを高める方法およびシステム |
Also Published As
Publication number | Publication date |
---|---|
US20090022249A1 (en) | 2009-01-22 |
JP4823160B2 (ja) | 2011-11-24 |
US8259853B2 (en) | 2012-09-04 |
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