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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 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
PublisherIEEE Computer Society
Pages254-258
Number of pages5
ISBN (Electronic)9781479959853
DOIs
Publication statusPublished - 12 Nov 2014
Externally publishedYes
Event2014 8th International Symposium on Turbo Codes and Iterative Information Processing, ISTC 2014 - Bremen, Germany
Duration: 18 Aug 201422 Aug 2014

Conference

Conference2014 8th International Symposium on Turbo Codes and Iterative Information Processing, ISTC 2014
CountryGermany
CityBremen
Period18.8.1422.8.14

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ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Information Systems
  • Theoretical Computer Science

Cite this

Chen, B., Jayakody, D. N. K., & Flanagan, M. F. (2014). Cooperative relaying with low-density lattice coding and joint iterative decoding. In International Symposium on Turbo Codes and Iterative Information Processing, ISTC (pp. 254-258). [6955124] IEEE Computer Society. https://doi.org/10.1109/ISTC.2014.6955124