Improved two-way double-relay selection technique for cooperative wireless communications

Abstract In this article, a novel two-way double-relay selection strategy with its bit error rate (BER) performance analysis is proposed. strategy, as first step we choose two relays out of set relay-nodes in way to maximize the system terms BER and complexity. second step, selected apply orthogonal space-time coding scheme using three-phase protocol establish communication between transceivers, which will lead significant improvement achievable diversity gain very low decoding complexity by symbol-wise decoder. Furthermore, overall further enhanced through use network method at relay-nodes. Moreover, paper proposes analytical approximation performance. As well, show that results match perfectly simulated ones. addition, prove our outperforms current state-of-the-art ones proposing better cooperative BER.