GB2542499A - Joint sparse graph design for multiple access systems - Google Patents

Joint sparse graph design for multiple access systems Download PDF

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Publication number
GB2542499A
GB2542499A GB1614502.1A GB201614502A GB2542499A GB 2542499 A GB2542499 A GB 2542499A GB 201614502 A GB201614502 A GB 201614502A GB 2542499 A GB2542499 A GB 2542499A
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GB
United Kingdom
Prior art keywords
sparse graph
joint sparse
joint
multiple access
access systems
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.)
Granted
Application number
GB1614502.1A
Other versions
GB201614502D0 (en
GB2542499B (en
Inventor
Wen Lei
Xiao Pei
Ali Imran Muhammad
Tafazolli Rahim
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.)
University of Surrey
Original Assignee
University of Surrey
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 University of Surrey filed Critical University of Surrey
Publication of GB201614502D0 publication Critical patent/GB201614502D0/en
Publication of GB2542499A publication Critical patent/GB2542499A/en
Application granted granted Critical
Publication of GB2542499B publication Critical patent/GB2542499B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H04L1/0048—Decoding adapted to other signal detection operation in conjunction with detection of multiuser or interfering signals, e.g. iteration between CDMA or MIMO detector and FEC 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
    • H03M13/03—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
    • 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
    • H03M13/1105—Decoding
    • H03M13/1111—Soft-decision decoding, e.g. by means of message passing or belief propagation algorithms
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7105—Joint detection techniques, e.g. linear detectors
    • 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

Abstract

A joint sparse graph (208) includes several single sparse graphs (204) and (206). Multiple accessing and channel coding are combined in the joint sparse graph, where joint multi-user detection and channel decoding can be performed by message passing algorithm. Design guidelines of the joint sparse graph are derived through EXIE chart analysis. The joint sparse graph not only leads to improved BER performance, but also reduces the detection complexity.
GB1614502.1A 2014-02-26 2015-02-26 Joint sparse graph design for multiple access systems Expired - Fee Related GB2542499B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB201403382A GB201403382D0 (en) 2014-02-26 2014-02-26 Joint sparse graph design for multiple access systems
PCT/GB2015/050549 WO2015128648A1 (en) 2014-02-26 2015-02-26 Joint sparse graph design for multiple access systems

Publications (3)

Publication Number Publication Date
GB201614502D0 GB201614502D0 (en) 2016-10-12
GB2542499A true GB2542499A (en) 2017-03-22
GB2542499B GB2542499B (en) 2021-09-08

Family

ID=50482838

Family Applications (2)

Application Number Title Priority Date Filing Date
GB201403382A Ceased GB201403382D0 (en) 2014-02-26 2014-02-26 Joint sparse graph design for multiple access systems
GB1614502.1A Expired - Fee Related GB2542499B (en) 2014-02-26 2015-02-26 Joint sparse graph design for multiple access systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB201403382A Ceased GB201403382D0 (en) 2014-02-26 2014-02-26 Joint sparse graph design for multiple access systems

Country Status (2)

Country Link
GB (2) GB201403382D0 (en)
WO (1) WO2015128648A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130022088A1 (en) * 2009-12-02 2013-01-24 France Telecom Method for transmitting a digital signal for a semi-orthogonal marc system having half-duplex relay, and corresponding program product and relay device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130022088A1 (en) * 2009-12-02 2013-01-24 France Telecom Method for transmitting a digital signal for a semi-orthogonal marc system having half-duplex relay, and corresponding program product and relay device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"On Receiver Design for Uplink Low Density Signature OFDM (LDS-OFDM)", Razieh Razavi et al, IEEE Transactions on Communications, IEEE, 1 November 2012, vol. 60, no. 11, pages 3499-3508. *

Also Published As

Publication number Publication date
GB201614502D0 (en) 2016-10-12
GB2542499B (en) 2021-09-08
GB201403382D0 (en) 2014-04-09
WO2015128648A1 (en) 2015-09-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20230226