Improved Bi-Directional Three-Phase Single-Relay Selection Technique for Cooperative Wireless Communications

Single-relay selection techniques based on the max-min criterion can achieve highest bit error rate (BER) performance with full diversity gain as compared to state-of-the-art single-relay techniques. Therefore, in this work, we propose a modified by considering differences among close value channels of all relays while selecting best relay node. The proposed not only enjoys but also offers significant improvement achievable coding conventional one. Basically, article, an improved bi-directional three-phase technique using decode-and-forward protocol for wireless cooperative communication networks that enhances overall network terms BER is and its proved analytically through Monte-Carlo simulations. More specifically, first used select relay-node. After selected relay-node forwards information symbols communicating terminals after performing digital minimize power consumptions. In our simulations, show outperforms best-known single Furthermore, prove results obtained from conducted simulations perfectly match those theoretical analysis.