An improved strategy of cooperative relay node selection
Hong Xie · Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University · 2012
Cooperative partnership selection is an important factor impacting cooperative communication network performance.In order to increase system reliability and reduce complexity,a relay selection strategy was put forward based on channel state information and distance information,and the relay selection criteria and formula derivation were discussed.The selection factor should be determined according to stimulus-response(S-R) instantaneous channel gain and resolution-defocus(R-D) distance;in the following research,the best relay node was obtained according to this selection factor,and the steps of the selection strategy were provided.The simulation results show that the strategy can effectively reduce the bit error rate(BER),and its performance is better than the relay node selection method based on distance information.The calculation work and complexity are lower than in the relay node selection method based on the instantaneous channel information.