Performance analysis of BP-based algorithms for irregular low-density parity-check codes on fast rayleigh fading channel

Akinori Ohhashi, Tomoaki Ohtsuki

Research output: Contribution to journalConference article

Abstract

In this paper, we analyze the performance of irregular low-density parity-check (LDPC) codes with three belief propagation (BP) based decoding algorithms, namely the uniformly most powerful (UMP) BP-based algorithm, the normalized BP-based algorithm, and the offset BP-based algorithm on a fast Rayleigh fading channel by using density evolution (DE). We also optimize the code construction of the irregular LDPC codes with three BP-based algorithms, and determine optimum parameters for the normalized BP-based algorithm and the offset BP-based algorithm on the fast Rayleigh fading channel. From the numerical results, we show that the performance of the irregular LDPC codes with offset BP-based algorithm can be very close to that with BP algorithm on the fast Rayleigh fading channel. We also show that the irregular LDPC codes with offset BP-based algorithm can achieve very good trade-off between the performance and decoding complexity.

Original languageEnglish
Pages (from-to)2530-2534
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume60
Issue number4
Publication statusPublished - 2004 Dec 1
Event2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States
Duration: 2004 Sep 262004 Sep 29

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ASJC Scopus subject areas

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

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