Performance analysis of multi-antenna relay networks with imperfect channel estimation

Authors: Ehsan Soleimani-Nasab, Mehrdad Ardebilipour, Ashkan Kalantari, Behrad Mahboobi

Abstract: 
In this paper, we present the performance of multi-antenna selective combining decode-and-forward (SC-DF) relay networks over independent but non-identical Nakagami-m fading channels with imperfect channel estimation. The outage probability, moment generating function (MGF) and symbol error probability (SEP) will be derived in closed-form using the SNR statistical characteristics. To make the analysis trackable, we have derived the MGF and SEP for integer values of fading severity, m. Also, to make the relations more simple, we develop high signal to noise ratio (SNR) analysis for the performance metrics of our system. Subsequently, we propose optimal and adaptive power allocation algorithms along with the equal power allocation method. Finally, for comparison with analytical formulas, we perform some Monte-Carlo simulations.

Keywords:
Multi-antenna
Selective relaying
Outage probability
Nakagami-m fading
Imperfect channel estimation
Convex optimization

Published in: AEÜ-International Journal of Electronics and Communications (Volume 67, Issue 1, January 2013)

Publisher: Elsevier

ISSN Information: 1434-8411

Performance analysis of multi-antenna relay networks with imperfect channel estimation

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