Extrinsic information setting for belief propagation decoding with network coding

Naohiro Tsuji, Tomoaki Ohtsuki

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

1 Citation (Scopus)

Abstract

Network coding has been investigated as a way to improve throughput and power efficiency of wireless networks by mixing of various traffic flows. The scenario under consideration is Y-topology denoise-and-forward relay channel that two sending stations transmit independent data to the receiving station directly and through the relay station. The receiving stations decode the error-correcting coded bits using the extrinsic information. Here, it is important to set the extrinsic information to decode the coded data accurately. In this paper, we present how to set the extrinsic information for belief propagation decoding with network coding to achieve better decoding error rate performance. We calculate the extrinsic information based not only on channels from the relay station to receiving station, but also on all channels from two sending stations to the receiving station when the receiving station decodes error-correcting coded data. When we use turbo code or low-density parity-check (LDPC) code as error-correcting code, we decode the coded data accurately by the use of accurate extrinsic information. We provide computer simulation results and show that the proposed method improves bit error rate performance and decreases the average number of decoding iterations.

Original languageEnglish
Title of host publication2010 IEEE 71st Vehicular Technology
DOIs
Publication statusPublished - 2010 Jul 30
Event2010 IEEE 71st Vehicular Technology Conference, VTC 2010-Spring - Taipei, Taiwan, Province of China
Duration: 2010 May 162010 May 19

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

Other2010 IEEE 71st Vehicular Technology Conference, VTC 2010-Spring
CountryTaiwan, Province of China
CityTaipei
Period10/5/1610/5/19

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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  • Cite this

    Tsuji, N., & Ohtsuki, T. (2010). Extrinsic information setting for belief propagation decoding with network coding. In 2010 IEEE 71st Vehicular Technology [5493940] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2010.5493940