Simulation of Cooperative Beamforming with Limited Feedback
Song Gao-jun · Jisuanji fangzhen · 2009
Due to the limited feedback in real wireless communication system,it is impossible to know exact CSI for the transmitters.Based on the amplify-forward model and two kinds of topology configurations,cooperative beamforming technology with limited feedback has been presented.This paper has researched the system performance under influence of quantification of feedback channel state information.Simulation results indicated that there is a close relationship between performance of cooperative system and the position of relay terminal.System can make the maximum cooperative gains when relay is in the middle of source and destination terminal.The bad influence on system performance under quantification of feedback is so limited that even one bit feedback can make great performance gains.