GB2394627B - Communication unit and method of decoding - Google Patents

Communication unit and method of decoding

Info

Publication number
GB2394627B
GB2394627B GB0224667A GB0224667A GB2394627B GB 2394627 B GB2394627 B GB 2394627B GB 0224667 A GB0224667 A GB 0224667A GB 0224667 A GB0224667 A GB 0224667A GB 2394627 B GB2394627 B GB 2394627B
Authority
GB
United Kingdom
Prior art keywords
decoding
communication unit
communication
unit
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.)
Expired - Fee Related
Application number
GB0224667A
Other versions
GB2394627A (en
GB0224667D0 (en
Inventor
Keren Kesselman
Avi Ben-Zur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Modem Art Ltd
Original Assignee
Modem Art Ltd
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 Modem Art Ltd filed Critical Modem Art Ltd
Priority to GB0224667A priority Critical patent/GB2394627B/en
Publication of GB0224667D0 publication Critical patent/GB0224667D0/en
Priority to PCT/EP2003/011570 priority patent/WO2004038928A1/en
Priority to AU2003301623A priority patent/AU2003301623A1/en
Publication of GB2394627A publication Critical patent/GB2394627A/en
Application granted granted Critical
Publication of GB2394627B publication Critical patent/GB2394627B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H03M13/3905—Maximum a posteriori probability [MAP] decoding or approximations thereof based on trellis or lattice decoding, e.g. forward-backward algorithm, log-MAP decoding, max-log-MAP decoding
    • H03M13/3927—Log-Likelihood Ratio [LLR] computation by combination of forward and backward metrics into LLRs
    • 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
    • H03M13/2703—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 the interleaver involving at least two directions
    • H03M13/271—Row-column interleaver with permutations, e.g. block interleaving with inter-row, inter-column, intra-row or intra-column permutations
    • H03M13/2714—Turbo interleaver for 3rd generation partnership project [3GPP] universal mobile telecommunications systems [UMTS], e.g. as defined in technical specification TS 25.212
    • 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
    • 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
    • H03M13/3972—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using sliding window techniques or parallel windows
    • 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
    • H03M13/6505—Memory efficient implementations
GB0224667A 2002-10-23 2002-10-23 Communication unit and method of decoding Expired - Fee Related GB2394627B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0224667A GB2394627B (en) 2002-10-23 2002-10-23 Communication unit and method of decoding
PCT/EP2003/011570 WO2004038928A1 (en) 2002-10-23 2003-10-17 Communication unit and method of decoding
AU2003301623A AU2003301623A1 (en) 2002-10-23 2003-10-17 Communication unit and method of decoding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0224667A GB2394627B (en) 2002-10-23 2002-10-23 Communication unit and method of decoding

Publications (3)

Publication Number Publication Date
GB0224667D0 GB0224667D0 (en) 2002-12-04
GB2394627A GB2394627A (en) 2004-04-28
GB2394627B true GB2394627B (en) 2004-09-08

Family

ID=9946435

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0224667A Expired - Fee Related GB2394627B (en) 2002-10-23 2002-10-23 Communication unit and method of decoding

Country Status (3)

Country Link
AU (1) AU2003301623A1 (en)
GB (1) GB2394627B (en)
WO (1) WO2004038928A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106936448B (en) * 2017-03-07 2020-05-01 西北工业大学 Turbo code FDAPPM (fully-closed phase product code) method suitable for laser communication buoy

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020118777A1 (en) * 2000-12-29 2002-08-29 Blankenship Thomas Keith Method and system for initializing a training period in a turbo decoding device
EP1261139A2 (en) * 2001-05-23 2002-11-27 Texas Instruments Incorporated Concurrent memory control for turbo decoders

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5933462A (en) * 1996-11-06 1999-08-03 Qualcomm Incorporated Soft decision output decoder for decoding convolutionally encoded codewords
EP1115209A1 (en) * 2000-01-07 2001-07-11 Motorola, Inc. Apparatus and method for performing parallel siso decoding
US6868132B1 (en) * 2000-02-10 2005-03-15 Motorola, Inc. Soft output decoder for convolutional codes
US7200799B2 (en) * 2001-04-30 2007-04-03 Regents Of The University Of Minnesota Area efficient parallel turbo decoding

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020118777A1 (en) * 2000-12-29 2002-08-29 Blankenship Thomas Keith Method and system for initializing a training period in a turbo decoding device
EP1261139A2 (en) * 2001-05-23 2002-11-27 Texas Instruments Incorporated Concurrent memory control for turbo decoders

Also Published As

Publication number Publication date
WO2004038928A1 (en) 2004-05-06
WO2004038928A9 (en) 2005-06-09
GB2394627A (en) 2004-04-28
GB0224667D0 (en) 2002-12-04
AU2003301623A1 (en) 2004-05-13

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20110526 AND 20110601

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20161023