Cooperative relaying with low-density lattice coding and joint iterative decoding

Bin Chen, Dushantha Nalin K. Jayakody, Mark F. Flanagan

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

4 Citations (Scopus)

Abstract

Low-density lattice codes (LDLCs) are known for their high decoding efficiency and near-capacity performance on point-to-point Gaussian channels. In this paper, we present a distributed LDLC-based cooperative relaying scheme for the multiple-access relay channel (MARC). The relay node decodes LDLC coded packets from two sources and forwards a network-coded combination to the destination. At the destination, a joint iterative decoding structure is designed to exploit the diversity gain as well as coding gain. For the LDLC-based network coding operation at the relay, we consider two alternative methods which offer a tradeoff between implementation complexity and performance, called superposition LDLC (S-LDLC) and modulo-addition LDLC (MA-LDLC). Simulation results show that the proposed scheme can provide more diversity gain and up to 6.2 dB coding gain when compared with non-cooperative LDLC coding and uncoded network-coded transmission.

Original languageEnglish
Title of host publicationInternational Symposium on Turbo Codes and Iterative Information Processing, ISTC
Place of PublicationBrussels
PublisherIEEE Computer Society
Pages254-258
Number of pages5
ISBN (Electronic)978-1-4799-5985-3
ISBN (Print)978-1-4799-5986-0
DOIs
Publication statusPublished - 1 Jan 2014
Event8th International Symposium on Turbo Codes and Iterative Information Processing (ISTC 2014) - Bremen, Germany
Duration: 18 Aug 201422 Aug 2014
Conference number: 8

Conference

Conference8th International Symposium on Turbo Codes and Iterative Information Processing (ISTC 2014)
Abbreviated titleISTC 2014
CountryGermany
CityBremen
Period18/08/1422/08/14

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