Performance of convolutionally-coded MIMO systems with antenna selection

Walaa Hamouda, Ali Ghrayeb

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this work, we study the performance of a serial concatenated scheme comprising a convolutional code (CC) and an orthogonal space-time block code (STBC) separated by an inter-leaver. Specifically, we derive performance bounds for this concatenated scheme, clearly quantify the impact of using a CC in conjunction with a STBC, and compare that to using a STBC code only. Furthermore, we examine the impact of performing antenna selection at the receiver on the diversity order and coding gain of the system. In performing antenna selection, we adopt a selection criterion that is based on maximizing the instantaneous signal-to-noise ratio (SNR) at the receiver. That is, we select a subset of the available receive antennas that maximizes the received SNR. Two channel models are considered in this study: Fast fading and quasi-static fading. For both cases, our analyses show that substantial coding gains can be achieved, which is confirmed through Monte-Carlo simulations. We demonstrate that the spatial diversity is maintained for all cases, whereas the coding gain deteriorates by no more than 10 log10 (M/L) dB, all relative to the full complexity multiple-input multiple-output (MIMO) system.

Original languageEnglish
Pages (from-to)307-312
Number of pages6
JournalJournal of Communications and Networks
Volume7
Issue number3
Publication statusPublished - Sep 2005
Externally publishedYes

    Fingerprint

Keywords

  • Antenna selection
  • Convolutional codes
  • Flat fast-fading channels
  • Multiple-input multiple-output (MIMO)
  • Space-time block codes (STBC)
  • Space-time trellis codes (STTC)

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems

Cite this