Performance Analysis of Multi-Antenna Relaying with Feedback Delay over Mixed Fading Channels
Ouyang Jia · Dianzi xuebao · 2014
The performance of a multi-antenna two-hop amplify-and-forward(AF)relay system with feedback delay over mixed fading channels is studied,where the source-relay and relay-destination links follow Rayleigh and Rician fading,respectively.Based on the beamforming(BF)model with feedback delay,we first obtain the equivalent output signal-to-noise ratio(SNR)for the AF relaying.With the help of infinite-series representation,we then derive the analytical expressions for the outage probability(OP)and probability density function(PDF)of the output SNR.Furthermore,the theoretical formulas of the Ergodic capacity and average symbol error rates(ASERs)of the system are also developed.Finally,the analytical results are verified through comparison with Monte Carlo simulations,where the effects of antenna number,feedback delay and channel parameters on the system performance are also investigated.