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Two-Way Multiple Relays Channel: Achievable Rate Region and Optimal Resources

Zouhair Al-Qudah, Wael Abu Shehab

DOI: 10.15598/aeee.v14i3.1646


Abstract

This paper considers a communication model containing two users that exchange their information with the help of multiple parallel relay nodes. To avoid interference at these common nodes, two users are required to transmit over the different frequency bands. Based on this scenario, the achievable rate region is initially derived. Next, an optimization scheme is described to choose the best relays that can be used by each user. Then, two power allocation optimization schemes are investigated to allocate the proper average power value to each node. Finally, comparisons between these two optimization schemes are carried out through some numerical examples.

Keywords


Channel capacity; decode and forward; power allocation; two-way relay channel.

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