BR0318142A - Conversão de informação suave para decodificação iterativa - Google Patents
Conversão de informação suave para decodificação iterativaInfo
- Publication number
- BR0318142A BR0318142A BR0318142-1A BR0318142A BR0318142A BR 0318142 A BR0318142 A BR 0318142A BR 0318142 A BR0318142 A BR 0318142A BR 0318142 A BR0318142 A BR 0318142A
- Authority
- BR
- Brazil
- Prior art keywords
- channel
- smooth
- values
- scaling factor
- transmitted
- Prior art date
Links
Classifications
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- 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
- H04L1/0047—Decoding adapted to other signal detection operation
- H04L1/005—Iterative decoding, including iteration between signal detection and decoding operation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/60—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/02—Comparing digital values
-
- 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
-
- 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
- H03M13/296—Particular turbo code structure
-
- 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
- H03M13/3707—Adaptive decoding and hybrid decoding, e.g. decoding methods or techniques providing more than one decoding algorithm for one code
-
- 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
- H03M13/6325—Error control coding in combination with demodulation
-
- 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
- H03M13/658—Scaling by multiplication or division
-
- 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
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
- H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- Mathematical Analysis (AREA)
- Computational Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mathematical Physics (AREA)
- Computing Systems (AREA)
- Quality & Reliability (AREA)
- Error Detection And Correction (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
"CONVERSãO DE INFORMAçãO SUAVE PARA DECODIFICAçãO ITERATIVA". São descritos métodos e aparelho para convertes valores suaves (214) como parte de um processo de decodificação de correção de erro. A decodificação precisa depende da utilização do fator de escala. A seleção e a utilização do fator de escala para converter valores suaves são projetadas para melhorar e/ou otimizar o desempenho do decodificador sem a necessidade de conhecimento anterior do fator de escala correto ou das condições de canal efetivas quando o sinal do qual os valores suaves foram obtidos foi transmitido através de um canal de comunicação. As técnicas da presente invenção supõem que os valores suaves a serem processados foram transmitidos através de um canal de comunicação tendo uma qualidade que pode ser descrita com precisão por um valor de qualidade de canal (200). O fator de escala é determinado da distribuição do valor suave (208) a ser convertido (212) e uma suposição de que o canal através do qual eles foram transmitidos era de qualidade correspondente a um valor de qualidade de canal pré-selecionado.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US45017403P | 2003-02-26 | 2003-02-26 | |
PCT/US2003/024730 WO2004079563A1 (en) | 2003-02-26 | 2003-08-07 | Soft information scaling for iterative decoding |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0318142A true BR0318142A (pt) | 2006-02-07 |
Family
ID=32962490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0318142-1A BR0318142A (pt) | 2003-02-26 | 2003-08-07 | Conversão de informação suave para decodificação iterativa |
Country Status (10)
Country | Link |
---|---|
US (1) | US7231577B2 (pt) |
EP (1) | EP1597667A4 (pt) |
JP (1) | JP4373340B2 (pt) |
KR (1) | KR100959425B1 (pt) |
CN (2) | CN100576168C (pt) |
AU (1) | AU2003261440C1 (pt) |
BR (1) | BR0318142A (pt) |
CA (1) | CA2516541A1 (pt) |
HK (1) | HK1090146A1 (pt) |
WO (1) | WO2004079563A1 (pt) |
Families Citing this family (48)
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US8018902B2 (en) * | 2003-06-06 | 2011-09-13 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and apparatus for channel quality indicator determination |
EP1700380B1 (en) * | 2003-12-23 | 2007-03-28 | Telefonaktiebolaget LM Ericsson (publ) | Turbo decoding with iterative estimation of channel parameters |
WO2007075098A1 (en) * | 2005-12-26 | 2007-07-05 | Intel Corporation | Generalized multi-threshold decoder for low-density parity check codes |
US7519126B2 (en) * | 2004-06-16 | 2009-04-14 | Broadcom Corporation | Space-time block-coding (STBC) with multiple streams in orhogonal frequency division mulitplexing (OFDM) for wireless local area networks (WLAN) and error metrics for soft decision with channel information |
US7515658B2 (en) * | 2004-06-29 | 2009-04-07 | Stmicroelectronics Asia Pacific Pte. Ltd. | Method to adaptively scale the input to a channel decoder |
US7739558B1 (en) * | 2005-06-22 | 2010-06-15 | Aquantia Corporation | Method and apparatus for rectifying errors in the presence of known trapping sets in iterative decoders and expedited bit error rate testing |
US7958424B2 (en) * | 2005-06-22 | 2011-06-07 | Trident Microsystems (Far East) Ltd. | Multi-channel LDPC decoder architecture |
KR100724986B1 (ko) | 2005-06-28 | 2007-06-04 | 삼성전자주식회사 | 부호분할 다중접속 시스템에서 터보 복호기의 입력데이터를 위한 스케일링 인자의 결정 방법 및 장치 |
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KR100738983B1 (ko) * | 2006-06-07 | 2007-07-12 | 주식회사 대우일렉트로닉스 | 저밀도 패리티 체크 부호의 복호화 방법 및 장치, 이를이용한 광정보 재생장치 |
KR100719351B1 (ko) * | 2006-06-13 | 2007-05-18 | 건국대학교 산학협력단 | 트리 저밀도 패리티체크 코드 성능분석 시스템 및 방법 |
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JP4645640B2 (ja) * | 2007-11-30 | 2011-03-09 | 住友電気工業株式会社 | 復号器、受信装置及び符号化データの復号方法 |
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US7551106B1 (en) * | 2007-12-18 | 2009-06-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Adjusting soft values to reduce bias |
JP5276173B2 (ja) | 2008-08-15 | 2013-08-28 | エルエスアイ コーポレーション | ニア・コードワードのromリスト復号 |
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CN101807966B (zh) * | 2009-02-13 | 2012-12-12 | 瑞昱半导体股份有限公司 | 奇偶校验码解码器及接收*** |
EP2340507A4 (en) * | 2009-03-05 | 2012-05-30 | Lsi Corp | IMPROVED TURBO COMPENSATION PROCESS FOR ITERATIVE DECODER |
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KR20120012960A (ko) * | 2009-04-28 | 2012-02-13 | 엘에스아이 코포레이션 | 판독된 데이터 처리 시스템의 동적 스케일링을 위한 시스템 및 방법 |
JP4929342B2 (ja) * | 2009-12-15 | 2012-05-09 | インターナショナル・ビジネス・マシーンズ・コーポレーション | ノイズ分散による入力対数尤度比のスケーリングに基づくsum−product復号法(ビリーフプロパゲーション法)の計算手法 |
US8451952B2 (en) | 2009-12-30 | 2013-05-28 | Telefonaktiebolaget L M Ericsson (Publ) | Iterative decoding and demodulation with feedback attenuation |
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-
2003
- 2003-08-07 EP EP03816195A patent/EP1597667A4/en not_active Ceased
- 2003-08-07 US US10/635,942 patent/US7231577B2/en active Active
- 2003-08-07 CN CN03826366A patent/CN100576168C/zh not_active Expired - Fee Related
- 2003-08-07 CA CA002516541A patent/CA2516541A1/en not_active Abandoned
- 2003-08-07 WO PCT/US2003/024730 patent/WO2004079563A1/en active Application Filing
- 2003-08-07 CN CN200910174480A patent/CN101695013A/zh active Pending
- 2003-08-07 JP JP2004569186A patent/JP4373340B2/ja not_active Expired - Fee Related
- 2003-08-07 BR BR0318142-1A patent/BR0318142A/pt not_active IP Right Cessation
- 2003-08-07 KR KR1020057015974A patent/KR100959425B1/ko not_active IP Right Cessation
- 2003-08-07 AU AU2003261440A patent/AU2003261440C1/en not_active Ceased
-
2006
- 2006-09-26 HK HK06110685.3A patent/HK1090146A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US7231577B2 (en) | 2007-06-12 |
WO2004079563A1 (en) | 2004-09-16 |
US20040168114A1 (en) | 2004-08-26 |
EP1597667A1 (en) | 2005-11-23 |
AU2003261440B2 (en) | 2009-12-24 |
AU2003261440C1 (en) | 2010-06-03 |
WO2004079563A8 (en) | 2005-03-17 |
JP2006515483A (ja) | 2006-05-25 |
JP4373340B2 (ja) | 2009-11-25 |
KR100959425B1 (ko) | 2010-05-26 |
CN1771476A (zh) | 2006-05-10 |
AU2003261440A1 (en) | 2004-09-28 |
EP1597667A4 (en) | 2009-01-14 |
KR20060021284A (ko) | 2006-03-07 |
CN101695013A (zh) | 2010-04-14 |
HK1090146A1 (en) | 2006-12-15 |
CA2516541A1 (en) | 2004-09-16 |
CN100576168C (zh) | 2009-12-30 |
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