NO981525L - Deteksjon av konfidens og ramme-signalkvalitet i en foldingsdekoder med myk avgj÷relse - Google Patents

Deteksjon av konfidens og ramme-signalkvalitet i en foldingsdekoder med myk avgj÷relse

Info

Publication number
NO981525L
NO981525L NO981525A NO981525A NO981525L NO 981525 L NO981525 L NO 981525L NO 981525 A NO981525 A NO 981525A NO 981525 A NO981525 A NO 981525A NO 981525 L NO981525 L NO 981525L
Authority
NO
Norway
Prior art keywords
soft decision
confidence
detection
signals
signal quality
Prior art date
Application number
NO981525A
Other languages
English (en)
Other versions
NO981525D0 (no
Inventor
Wing Tak Kenneth Wong
Danny Yuk-Kun Wong
Original Assignee
British Telecomm
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Telecomm filed Critical British Telecomm
Publication of NO981525D0 publication Critical patent/NO981525D0/no
Publication of NO981525L publication Critical patent/NO981525L/no

Links

Classifications

    • 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
    • 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
    • H03M13/27—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 using interleaving techniques
    • H03M13/275—Interleaver wherein the permutation pattern is obtained using a congruential operation of the type y=ax+b modulo c
    • 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
    • H03M13/3738—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35 with judging correct decoding
    • 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
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • 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
    • H04L1/0059—Convolutional codes
    • 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
    • H04L1/0061—Error detection codes
    • 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
    • H04L1/0067—Rate matching
    • H04L1/0068—Rate matching by puncturing
    • H04L1/0069—Puncturing patterns
    • 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
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • 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
    • H03M13/09—Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
    • 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
    • H04L2001/0098—Unequal error protection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Artificial Intelligence (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

Mottatte signaler blir behandlet (1 1 1 ) for å generere konfidensmål-signaler. Før disse blir videresendt til en dekoder med myk avgjørelse (116), blir korrek- sjonsfaktorer påført, f.eks. ved hjelp av en oppslagstabell (113), for å redusere det omfang i hvilket signalene skiller seg fra en logaritmisk representasjon av feilsta- tistikkene for de mottatte signaler. Alternativt eller i tillegg kan konfidensmålsigna- lene summeres (122) og terskelprøves (123) for å tilveiebringe et kvalitetsindike- rende signal, l en koder blir feilkontroll-biter for en ramme med bilder som skal foldingskodes, generert fra biter tatt fra begynnelsen og slutten av rammen, men ikke fra midten.
NO981525A 1995-10-06 1998-04-03 Deteksjon av konfidens og ramme-signalkvalitet i en foldingsdekoder med myk avgj÷relse NO981525L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9520445.9A GB9520445D0 (en) 1995-10-06 1995-10-06 Convolutional codes
PCT/GB1996/002423 WO1997014235A1 (en) 1995-10-06 1996-10-03 Confidence and frame signal quality detection in a soft decision convolutional decoder

Publications (2)

Publication Number Publication Date
NO981525D0 NO981525D0 (no) 1998-04-03
NO981525L true NO981525L (no) 1998-06-03

Family

ID=10781891

Family Applications (1)

Application Number Title Priority Date Filing Date
NO981525A NO981525L (no) 1995-10-06 1998-04-03 Deteksjon av konfidens og ramme-signalkvalitet i en foldingsdekoder med myk avgj÷relse

Country Status (13)

Country Link
US (2) US5983174A (no)
EP (2) EP1508990A1 (no)
JP (1) JP3681759B2 (no)
KR (1) KR19990064118A (no)
CN (1) CN1140084C (no)
AU (1) AU728399B2 (no)
CA (1) CA2233980C (no)
DE (1) DE69634155T2 (no)
GB (1) GB9520445D0 (no)
NO (1) NO981525L (no)
NZ (1) NZ319215A (no)
SG (1) SG92637A1 (no)
WO (1) WO1997014235A1 (no)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2320663B (en) * 1996-12-20 2001-09-12 Motorola Ltd Signal processing in digital radio receivers
ES2157854B1 (es) * 1997-04-10 2002-04-01 Nokia Mobile Phones Ltd Metodo para disminuir el porcentaje de error de bloque en una transmision de datos en forma de bloques de datos y los correspondientes sistema de transmision de datos y estacion movil.
JPH1117555A (ja) 1997-06-26 1999-01-22 Mitsubishi Electric Corp データ伝送システム、受信装置および記録媒体
CA2306842A1 (en) * 1997-11-03 1999-05-14 Harris Corporation Receiver for a reconfigurable radio system and method therefor
JP3249457B2 (ja) * 1997-11-28 2002-01-21 沖電気工業株式会社 ディジタル通信用音声送受信装置
KR100535783B1 (ko) 1998-01-07 2005-12-12 지멘스 악티엔게젤샤프트 정보를 코딩, 디코딩 및 전송하는 방법, 신호 처리기 및 무선 장치
US6192500B1 (en) * 1998-02-11 2001-02-20 Conexant Systems, Inc. Method and apparatus for enhanced performance in a system employing convolutional decoding
WO1999046884A1 (en) 1998-03-12 1999-09-16 British Telecommunications Public Limited Company Method and apparatus for signal degradation measurement
DE19845888A1 (de) * 1998-10-06 2000-05-11 Bosch Gmbh Robert Verfahren zur Codierung oder Decodierung von Sprachsignalabtastwerten sowie Coder bzw. Decoder
GB2348087B (en) 1999-03-13 2003-08-13 Nec Technologies Detection of unreliable frames in digital data transmission systems
CN100483953C (zh) 1999-05-10 2009-04-29 株式会社Ntt杜可莫 数据信号发送方法与数据信号发送装置
JP4449108B2 (ja) * 1999-08-05 2010-04-14 パナソニック株式会社 音声復号装置
US6915263B1 (en) * 1999-10-20 2005-07-05 Sony Corporation Digital audio decoder having error concealment using a dynamic recovery delay and frame repeating and also having fast audio muting capabilities
US6799294B1 (en) * 2000-04-06 2004-09-28 Lucent Technologies Inc. Method and apparatus for generating channel error flags for error mitigation and/or concealment in source decoders
US6760699B1 (en) * 2000-04-24 2004-07-06 Lucent Technologies Inc. Soft feature decoding in a distributed automatic speech recognition system for use over wireless channels
CA2379986C (en) * 2000-05-24 2006-03-28 Samsung Electronics Co., Ltd. Data transmission apparatus and method for an harq data communication system
US7109970B1 (en) * 2000-07-01 2006-09-19 Miller Stephen S Apparatus for remotely controlling computers and other electronic appliances/devices using a combination of voice commands and finger movements
US7051268B1 (en) * 2000-09-29 2006-05-23 Qualcomm Incorporated Method and apparatus for reducing power consumption of a decoder in a communication system
FI115178B (fi) 2000-10-31 2005-03-15 Nokia Corp Menetelmä ja järjestely bittien suojaamiseksi parhaalla mahdollisella tavalla tiedonsiirtovirheitä vastaan
US6583735B2 (en) * 2001-02-01 2003-06-24 Nec Corporation Method and apparatus for adaptive bus coding for low power deep sub-micron designs
FR2821096A1 (fr) 2001-02-20 2002-08-23 Clotilde Martine Griguer Systeme de revetement permettant de former des pistes de circulation temporaire
GB2387304B (en) * 2001-06-28 2004-07-07 Samsung Electronics Co Ltd Apparatus and method for decoding TFCI bits for a hard split mode in a CDMA mobile communication system
US6901550B2 (en) * 2001-10-17 2005-05-31 Actelis Networks Inc. Two-dimensional interleaving in a modem pool environment
JP4642753B2 (ja) * 2003-05-05 2011-03-02 トムソン ライセンシング インタラクティブ復号化に利用される装置及び方法
WO2004100480A1 (de) * 2003-05-12 2004-11-18 Siemens Aktiengesellschaft Signalisierung zur bitzuweisung in einem drahtlosen lan
JP4417733B2 (ja) * 2004-01-15 2010-02-17 ソニー・エリクソン・モバイルコミュニケーションズ株式会社 伝送方法及び装置
WO2005086138A1 (ja) * 2004-03-05 2005-09-15 Matsushita Electric Industrial Co., Ltd. エラー隠蔽装置およびエラー隠蔽方法
US7949074B2 (en) * 2004-04-24 2011-05-24 Thomson Licensing Apparatus and method for decoding in a hierarchical, modulation system
JP2005348412A (ja) * 2004-06-02 2005-12-15 Samsung Electronics Co Ltd 移動通信システムにおける時分割多重フレームを検出する装置及び方法
US8166354B2 (en) * 2006-11-30 2012-04-24 Research In Motion Limited Apparatus, and associated method, for estimating a bit error rate of data communicated in a communication system
JP5385513B2 (ja) * 2007-06-18 2014-01-08 富士通モバイルコミュニケーションズ株式会社 ディジタル通信システム、ディジタル無線送信装置、ディジタル無線受信装置
US8135015B2 (en) * 2009-03-27 2012-03-13 Qualcomm Incorporated System and method of transmitting and receiving data frames
US9489950B2 (en) * 2012-05-31 2016-11-08 Agency For Science, Technology And Research Method and system for dual scoring for text-dependent speaker verification

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3805169A1 (de) * 1988-02-19 1989-08-31 Inst Rundfunktechnik Gmbh Verfahren zum uebertragen eines digital-codierten tonsignals
US5144644A (en) * 1989-10-13 1992-09-01 Motorola, Inc. Soft trellis decoding
US5214656A (en) * 1990-12-13 1993-05-25 At&T Bell Laboratories Multiplexed coded modulation with unequal error protection
US5265649A (en) * 1991-07-10 1993-11-30 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Cloth roll exchange apparatus for a loom
DE9218980U1 (de) * 1991-09-05 1996-08-22 Motorola Inc., Schaumburg, Ill. Fehlerschutz für Mehrmoden-Sprachcoder
DE4229654A1 (de) * 1991-09-25 1993-04-22 Thomson Brandt Gmbh Verfahren zur uebertragung eines audio- und/oder videosignals
JPH05336080A (ja) * 1992-06-03 1993-12-17 Matsushita Electric Ind Co Ltd 誤り制御システム
SE470372B (sv) * 1992-06-23 1994-01-31 Ericsson Telefon Ab L M Metod jämte anordning att uppskatta kvaliten vid ramfelsdetektering i mottagaren hos ett radiokommunikationssystem
US5255343A (en) * 1992-06-26 1993-10-19 Northern Telecom Limited Method for detecting and masking bad frames in coded speech signals
JP3233472B2 (ja) * 1993-01-07 2001-11-26 株式会社東芝 データ通信装置
US5363413A (en) * 1993-05-20 1994-11-08 Motorola, Inc. Data decoder and method for use therein using a dynamically indexed channel state metric
JPH0964849A (ja) * 1995-08-18 1997-03-07 Nippon Telegr & Teleph Corp <Ntt> 誤り訂正装置

Also Published As

Publication number Publication date
JP3681759B2 (ja) 2005-08-10
SG92637A1 (en) 2002-11-19
WO1997014235A1 (en) 1997-04-17
JPH11513551A (ja) 1999-11-16
GB9520445D0 (en) 1995-12-06
CN1198861A (zh) 1998-11-11
AU7138996A (en) 1997-04-30
EP0853848A1 (en) 1998-07-22
DE69634155D1 (de) 2005-02-10
EP0853848B1 (en) 2005-01-05
CN1140084C (zh) 2004-02-25
CA2233980C (en) 2002-12-17
KR19990064118A (ko) 1999-07-26
EP1508990A1 (en) 2005-02-23
US6081778A (en) 2000-06-27
NO981525D0 (no) 1998-04-03
NZ319215A (en) 2000-02-28
US5983174A (en) 1999-11-09
CA2233980A1 (en) 1997-04-17
AU728399B2 (en) 2001-01-11
DE69634155T2 (de) 2006-01-05

Similar Documents

Publication Publication Date Title
NO981525L (no) Deteksjon av konfidens og ramme-signalkvalitet i en foldingsdekoder med myk avgj÷relse
GB2271256A (en) Error detection system
KR920011271A (ko) 순차 부호화 시스템
ES2088716A1 (es) Sistema de deteccion de errores ean la recepcion de se¦ales codificadas transmitidas por radiofrecuencia.
AU2001289991A1 (en) Transmission error concealment in an audio signal
MX9800366A (es) Aparato para descodificar señales de video codificadas en formatos diferentes.
MY118136A (en) Image quality correction circuit for video signals
NO180510B (no) Fremgangsmåte for deteksjon og skjuling av feil ved benyttelse av forutsagte signalverdier
MY115945A (en) Picture information detecting apparatus for a video signal
KR960030710A (ko) 디지탈 신호 복호 장치
NO993128L (no) Adaptivt forforvrengningssystem
WO1996009704A3 (en) Detection of defective speech frames in a receiver of a digital speech communication system
AU1133595A (en) Processing of speech coder parameters in the receiver of a communications system
EP0999697A3 (en) An image scanner having image correcting function
EP0617519A3 (de) Schaltungsanordnung zur Ableitung mindestens eines von der Qualität eines empfangenen Signals abhängigen Qualitätssignals.
GB2363667A (en) Method and apparatus for correcting digital asymmetric read signals
EP0783231A3 (en) Image noise reduction system
FR2650143A1 (fr) Circuit de correction automatique de l&#39;equilibre des couleurs
AU3167797A (en) Device for determining the quality of an output signal to be generated by a signal processing circuit, and also method
GB2322527A (en) Data error correction
KR100205298B1 (ko) 텍스트 신호를 발생시키는 비디오 레코더
GB9023305D0 (en) Video signal processing
JPH06165129A (ja) 動き検出回路
JPH02214269A (ja) 信号受信装置
KR940023150A (ko) 화신호 처리 및 보상회로

Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application