Relay selection for multiple access relay channel with decode-forward and analog network coding

TL;DR

This paper proposes a relay selection scheme using decode-forward with network coding and analog network coding in cellular networks, optimizing power allocation to enhance system performance and reduce error rates.

Contribution

It introduces a relay selection method based on minimum SER and develops an optimal power allocation strategy for improved performance in relay-assisted networks.

Findings

DF-NC outperforms analog-NC in SER performance.

Optimal power allocation improves system reliability.

Increasing relay nodes enhances performance with optimal power control.

Abstract

This paper presents a relay selection for decode-and-forward based on network coding (DF-NC) and analog-NC protocols in general scheme of cellular network system. In the propose scheme the two source node simultaneously transmit their own information to all the relays as well as the destination node, and then, a single relay i.e. best with a minimum symbol error rate (SER) will be selected to forward the new version of the received signal. Simulation results show that, the DF-NC scheme with considerable performance has exactness over analog-NC scheme. To improve the system performance, optimal power allocation between the two sources and the best relay is determined based on the asymptotic SER. By increasing the number of relays node, the optimum power allocation achieve better performance than asymptotic SER.