Power allocation strategies for distributed space-time codes in amplify-and-forward mode

Behrouz Maham, Are Hjørungnes

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The idea of space-time coding, devised for multiple-antenna systems, can be applied to communication over a wireless relay network. In this paper, we derive an approximate formula for the bit error rate (BER) of distributed space-time codes in amplify-and-forward (AF) mode, in which each relay transmits a scaled version of the linear combination of its received symbols. Assuming M-PSK or M-QAM modulated, full-rate, and full-diversity space-time codes, we derive two power allocation strategies minimizing the approximate BER expressions, for constrained transmit power. Our analytical results have been verified by simulation results.

Original languageEnglish
Title of host publicationIWCMC 2008 - International Wireless Communications and Mobile Computing Conference
Pages905-909
Number of pages5
DOIs
Publication statusPublished - 2008
EventInternational Wireless Communications and Mobile Computing Conference, IWCMC 2008 - Crete, Greece
Duration: Aug 6 2008 → Aug 8 2008

Publication series

NameIWCMC 2008 - International Wireless Communications and Mobile Computing Conference

Other

OtherInternational Wireless Communications and Mobile Computing Conference, IWCMC 2008
CountryGreece
CityCrete
Period8/6/08 → 8/8/08

Keywords

  • Amplify-and-forward
  • Cooperation
  • Distributed space-time codes
  • Power allocation

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Software
  • Electrical and Electronic Engineering

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