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Two-Phase Bidirectional Dual-Relay Selection Strategy for Wireless Relay Networks

Samer Alabed*, Issam Maaz, Mohammad Al-Rabayah

College of Engineering and Technology, American University of the Middle East, Kuwait

* Corresponding Author: Samer Alabed. Email: email

(This article belongs to the Special Issue: Reinforcement Learning Based solutions for Next-Generation Wireless Networks Coexistence)

Computers, Materials & Continua 2021, 69(1), 539-553.


In this article, we introduce a new bi-directional dual-relay selection strategy with its bit error rate (BER) performance analysis. During the first step of the proposed strategy, two relays out of a set of N relay-nodes are selected in a way to optimize the system performance in terms of BER, based on the suggested algorithm which checks if the selected relays using the max-min criterion are the best ones. In the second step, the chosen relay-nodes perform an orthogonal space-time coding scheme using the two-phase relaying protocol to establish a bi-directional communication between the communicating terminals, leading to a significant improvement in the achievable coding and diversity gain. To further improve the overall system performance, the selected relay-nodes apply also a digital network coding scheme. Furthermore, this paper discusses the analytical approximation of the BER performance of the proposed strategy, where we prove that the analytical results match almost perfectly the simulated ones. Finally, our simulation results show that the proposed strategy outperforms the current state-of-the-art ones.


Cite This Article

APA Style
Alabed, S., Maaz, I., Al-Rabayah, M. (2021). Two-phase bidirectional dual-relay selection strategy for wireless relay networks. Computers, Materials & Continua, 69(1), 539-553.
Vancouver Style
Alabed S, Maaz I, Al-Rabayah M. Two-phase bidirectional dual-relay selection strategy for wireless relay networks. Comput Mater Contin. 2021;69(1):539-553
IEEE Style
S. Alabed, I. Maaz, and M. Al-Rabayah "Two-Phase Bidirectional Dual-Relay Selection Strategy for Wireless Relay Networks," Comput. Mater. Contin., vol. 69, no. 1, pp. 539-553. 2021.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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