A sequential assisted relay selective scheme based on the stochastic dynamic programming

摘要

Relay assisted (RA) network with the assisted relay selection is a kind of effective method to improve the channel capacity and converge performance. However, most of the existing research about the assisted relay selection did not consider the statical channel information and the selective cost. This shortage limited the performance and application of RA network in practical scenario. In order to overcome this drawback, a sequential assisted relay selective scheme (ARSS) is proposed. And the performance upper bound (UB) of ARSS is also analyzed. Furthermore, in order to make ARSS more practical, a determination algorithm of the assisted relay selective threshold based on the stochastic dynamic program (SDP) is given to work with ARSS. Numerical results indicate that the performance of ARSS with SDP is close to the performance UB of ARSS effectively.