Performance of turbo codes with two-branch receive diversity and correlated fading

Tomoaki Ohtsuki, Joseph M. Kahn

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

We analyze the effects of fading correlation on the performance of turbo codes with two-branch receive diversity combining schemes. We use transfer function bounding techniques to obtain upper bounds on the bit error rate (BER) for maximum-likelihood (ML) decoding of turbo codes constructed with uniform interleavers. We apply the techniques to parallel concatenated coding (PCC) schemes with two-branch receive diversity. We present the average bounds on the BER for two cases: (a) fully interleaved channels with channel state information (CSI) and (b) Rayleigh fading channels with fading perfectly correlated in time. We show that as the fades in the two antennas become more correlated, the BER improvement obtained by increasing the block size N becomes larger. We also show that the effects of fading correlation for maximal ratio combining (MRC) and for equal gain combining (EGC) are almost identical, while those for selection combining (SC) are much more pronounced than for these two techniques.

Original languageEnglish
Pages (from-to)1026-1030
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume2
Publication statusPublished - 2000 Jan 1
Externally publishedYes
EventVTC2000: 51st Vehicular Technology Conference 'Shaping History Through Mobile Technologies' - Tokyo, Jpn
Duration: 2000 May 152000 May 18

ASJC Scopus subject areas

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

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