SG92637A1 - Confidence and frame signal quality detection in a soft decision convolutional decoder - Google Patents

Confidence and frame signal quality detection in a soft decision convolutional decoder

Info

Publication number
SG92637A1
SG92637A1 SG9902136A SG1999002136A SG92637A1 SG 92637 A1 SG92637 A1 SG 92637A1 SG 9902136 A SG9902136 A SG 9902136A SG 1999002136 A SG1999002136 A SG 1999002136A SG 92637 A1 SG92637 A1 SG 92637A1
Authority
SG
Singapore
Prior art keywords
confidence
signal quality
quality detection
frame signal
soft decision
Prior art date
Application number
SG9902136A
Other languages
English (en)
Inventor
Wing-Tak Kenneth Wong
Yuk-Kun Danny 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 SG92637A1 publication Critical patent/SG92637A1/en

Links

Classifications

    • 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
    • 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
    • H03M13/27—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)
SG9902136A 1995-10-06 1996-10-03 Confidence and frame signal quality detection in a soft decision convolutional decoder SG92637A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9520445.9A GB9520445D0 (en) 1995-10-06 1995-10-06 Convolutional codes

Publications (1)

Publication Number Publication Date
SG92637A1 true SG92637A1 (en) 2002-11-19

Family

ID=10781891

Family Applications (1)

Application Number Title Priority Date Filing Date
SG9902136A SG92637A1 (en) 1995-10-06 1996-10-03 Confidence and frame signal quality detection in a soft decision convolutional decoder

Country Status (13)

Country Link
US (2) US5983174A (https=)
EP (2) EP0853848B1 (https=)
JP (1) JP3681759B2 (https=)
KR (1) KR19990064118A (https=)
CN (1) CN1140084C (https=)
AU (1) AU728399B2 (https=)
CA (1) CA2233980C (https=)
DE (1) DE69634155T2 (https=)
GB (1) GB9520445D0 (https=)
NO (1) NO981525L (https=)
NZ (1) NZ319215A (https=)
SG (1) SG92637A1 (https=)
WO (1) WO1997014235A1 (https=)

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US6192500B1 (en) * 1998-02-11 2001-02-20 Conexant Systems, Inc. Method and apparatus for enhanced performance in a system employing convolutional decoding
EP1062758A1 (en) 1998-03-12 2000-12-27 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
EP1914895B1 (en) * 1999-05-10 2017-11-01 NTT DoCoMo, Inc. Data multiplexing method and data multiplexer, and data transmitting method and data transmitter
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
KR100403738B1 (ko) * 2000-05-24 2003-10-30 삼성전자주식회사 복합 재전송형식을 사용하는 데이터 통신시스템의 데이터송수신장치 및 방법
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
GB2386808B (en) * 2001-06-28 2004-07-07 Samsung Electronics Co Ltd Apparatus and method for transmitting 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
WO2004100475A2 (en) * 2003-05-05 2004-11-18 Thomson Licensing S.A. Adaptive soft demodulation for reception of distorted signals
CN1788479A (zh) * 2003-05-12 2006-06-14 西门子公司 用于在无线lan中分配比特的信令
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
US7327714B2 (en) * 2004-06-02 2008-02-05 Samsung Electronics Co., Ltd. Apparatus and method for detecting a time division multiplexing frame in a mobile communication system
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
US12462814B2 (en) * 2023-10-06 2025-11-04 Digital Voice Systems, Inc. Bit error correction in digital speech
US20250336405A1 (en) * 2024-04-24 2025-10-30 Digital Voice Systems, Inc. Voicing Smoother

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US5144644A (en) * 1989-10-13 1992-09-01 Motorola, Inc. Soft trellis decoding
US5255343A (en) * 1992-06-26 1993-10-19 Northern Telecom Limited Method for detecting and masking bad frames in coded speech signals
US5363413A (en) * 1993-05-20 1994-11-08 Motorola, Inc. Data decoder and method for use therein using a dynamically indexed channel state metric
US5432778A (en) * 1992-06-23 1995-07-11 Telefonaktiebolaget Lm Ericsson Method and an arrangement for frame detection quality estimation in the receiver of a radio communication system

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US5144644A (en) * 1989-10-13 1992-09-01 Motorola, Inc. Soft trellis decoding
EP0490552A2 (en) * 1990-12-13 1992-06-17 AT&T Corp. Multiplexed coded modulation with unequal error protection
US5432778A (en) * 1992-06-23 1995-07-11 Telefonaktiebolaget Lm Ericsson Method and an arrangement for frame detection quality estimation in the receiver of a radio communication system
US5255343A (en) * 1992-06-26 1993-10-19 Northern Telecom Limited Method for detecting and masking bad frames in coded speech signals
US5363413A (en) * 1993-05-20 1994-11-08 Motorola, Inc. Data decoder and method for use therein using a dynamically indexed channel state metric

Also Published As

Publication number Publication date
NO981525D0 (no) 1998-04-03
EP0853848A1 (en) 1998-07-22
JP3681759B2 (ja) 2005-08-10
CA2233980A1 (en) 1997-04-17
US6081778A (en) 2000-06-27
JPH11513551A (ja) 1999-11-16
CN1198861A (zh) 1998-11-11
NZ319215A (en) 2000-02-28
EP1508990A1 (en) 2005-02-23
EP0853848B1 (en) 2005-01-05
DE69634155D1 (de) 2005-02-10
KR19990064118A (ko) 1999-07-26
CA2233980C (en) 2002-12-17
WO1997014235A1 (en) 1997-04-17
CN1140084C (zh) 2004-02-25
DE69634155T2 (de) 2006-01-05
AU7138996A (en) 1997-04-30
AU728399B2 (en) 2001-01-11
NO981525L (no) 1998-06-03
US5983174A (en) 1999-11-09
GB9520445D0 (en) 1995-12-06

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