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

Authors:
Nuri Kapucu;Mehmet Bilim;Ibrahim Develi
Affiliations:
Department of Electrical and Electronics Engineering, Faculty of Engineering, Erciyes University, Kayseri, Turkey 38039;Department of Electrical and Electronics Engineering, Faculty of Engineering, Erciyes University, Kayseri, Turkey 38039;Department of Electrical and Electronics Engineering, Faculty of Engineering, Erciyes University, Kayseri, Turkey 38039
Venue:
Wireless Personal Communications: An International Journal
Year:
2013

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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.