Performance analysis of optimal relay selective cooperation in railway network

In the railway network, the fact that signal amplitude suffers loss resulted from signal traversing through the carriage which named by carriage pass loss, highly influences the reliability of the wireless communication system. In this paper, we propose an optimal relay selective cooperation (ORSC) scheme without the acknowledgment from the destination as if it succeeds in decoding or not. The main purpose of this paper is to evaluate the performance of ORSC transmission schemes. Specifically, the closed-form outage probabilities for ORSC transmission scheme are derived. By comparing obtained outage probability of ORSC with the non-cooperation transmission scheme, we find the ORSC transmission has better performance, better reliability and significantly eliminates the impact of the carriage passing loss.