Performance Analysis of Amplify-and-Forward Cooperative Communication Systems with Channel Estimation Errors
Cooperative diversity is a transmission technique that achieves a diversity gain by using a combination of the relayed signal and the direct signal. In this paper, we study the symbol-error-rate (SER) performance of a cooperative communication system operating in an amplify-and-forward (AF) mode, where the channel state information (CSI) available at the receiver is an estimate of the channel gains with estimation errors. We derive both the probability density function and the moment generating function of the instantaneous signal-tonoise ratio (SNR) at the destination terminal. These statistical quantities are then applied to study the performance of an AF cooperative communication systems. More precisely, an accurate SER expression for AF cooperative communication systems with channel estimation errors is obtained. This result encompasses the performance of AF cooperative communication systems with perfect CSI as a special case. Furthermore, simulation results are presented to verify the correctness of the analytical solutions.
Yi Wu Matthias Patzold
Department of ICT,University of Agder P.O.Box 509,4898 Grimstad,Norway
国际会议
广州
英文
2008-11-19（万方平台首次上网日期，不代表论文的发表时间）