On the Performance of Selection Relaying

TL;DR

This paper provides accurate error rate analyses for selection relaying that are valid across a wide range of SNR levels, addressing practical system design needs beyond high SNR assumptions.

Contribution

It introduces error rate analysis methods for selection relaying that remain accurate at low to moderate SNR levels, unlike previous high SNR-focused analyses.

Findings

Analytical results closely match simulation data across SNR regimes

Error rate performance is characterized accurately over practical SNR ranges

Provides insights for network design and deployment decisions

Abstract

Interest in selection relaying is growing. The recent developments in this area have largely focused on information theoretic analyses such as outage performance. Some of these analyses are accurate only at high SNR regimes. In this paper error rate analyses that are sufficiently accurate over a wide range of SNR regimes are provided. The motivations for this work are that practical systems operate at far lower SNR values than those supported by the high SNR analysis. To enable designers to make informed decisions regarding network design and deployment, it is imperative that system performance is evaluated with a reasonable degree of accuracy over practical SNR regimes. Simulations have been used to corroborate the analytical results, as close agreement between the two is observed.