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Performance analysis of cooperative diversity systems with opportunistic relaying and adaptive transmission

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2 Author(s)
Torabi, M. ; Dept. of Electr. Eng., Ecole Polytech. de Montreal, Montréal, QC, Canada ; Haccoun, D.

The system performance of the opportunistic relaying technique in amplify-and-forward cooperative systems with adaptive transmission over Rayleigh fading channels is analysed. Two rate-adaptive modulation techniques, continuous-rate and discrete-rate adaptive techniques, are considered. Closed-form expressions are derived for the average spectral efficiency, outage probability and the average bit error rate for two cases: independent and identically distributed (i.i.d.) fading links and independent and non-identically distributed ( links. Using numerical evaluations, the performances of different cases are compared showing the advantages of each adaptive modulation technique in conjunction with the opportunistic relaying in a cooperative communication over both i.i.d. and fading links.

Published in:

Communications, IET  (Volume:5 ,  Issue: 3 )