SER Performance of Amplify-and-Forward Cooperative Diversity Over Asymmetric Fading Channels

KAPUCU N., BİLİM M., DEVELİ I.

WIRELESS PERSONAL COMMUNICATIONS, vol.73, no.3, pp.1117-1127, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 73 Issue: 3
  • Publication Date: 2013
  • Doi Number: 10.1007/s11277-013-1251-4
  • Journal Name: WIRELESS PERSONAL COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1117-1127
  • Erciyes University Affiliated: Yes

Abstract

In this paper, the performance of amplify-and-forward (AF) cooperative diversity is analyzed over asymmetric fading channels. The source-relay and the relay-destination links experience Rayleigh fading while the source-destination link is subject to generalized Gamma fading. First, the probability density function (PDF) and the moment generating function (MGF) of the source-relay-destination link and the MGF of the source-destination link are derived. Then, the symbol error rate (SER) is determined based on the MGF of the total end-to-end signal-to-noise ratio (SNR). Moreover, the SER performance of N-relay assisted AF cooperative diversity is illustrated for M-ary phase shift keying (M-PSK) and M-ary quadrature amplitude modulation (M-QAM). Based on the derived MGF expressions, the numerical results are obtained by varying the modulation types and channel parameters for different scenarios.