Efficient Incremental Relaying

TL;DR

This paper introduces an efficient incremental relaying scheme that enhances spectral efficiency in cooperative diversity systems by using limited feedback, selectively relaying only during deep fading conditions.

Contribution

The paper presents a novel relaying scheme that improves spectral efficiency by leveraging limited feedback and selective relaying based on channel conditions.

Findings

Packet error rate analysis matches numerical results

Scheme improves spectral efficiency during deep fading

Applicable to amplify and forward, decode and forward relaying

Abstract

We propose a novel relaying scheme which improves the spectral efficiency of cooperative diversity systems by utilizing limited feedback from destination. Our scheme capitalizes on the fact that relaying is only required when direct transmission suffers deep fading. We calculate the packet error rate for the proposed efficient incremental relaying scheme with both amplify and forward and decode and forward relaying. Numerical results are also presented to verify their analytical counterparts.