Performance analysis of selective decode-and-forward multinode incremental relaying with maximal ratio combining

Amir Hadjtaieb, Ali Chelli, Mohamed Slim Alouini, Hatem Boujemaa

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

In this paper, we propose an incremental multinode relaying protocol with arbitrary N-relay nodes that allows an efficient use of the channel spectrum. The destination combines the received signals from the source and the relays using maximal ratio combining (MRC). The transmission ends successfully once the accumulated signal-to-noise ratio (SNR) exceeds a predefined threshold. The number of relays participating in the transmission is adapted to the channel conditions based on the feedback from the destination. The use of incremental relaying allows obtaining a higher spectral efficiency. Moreover, the symbol error probability (SEP) performance is enhanced by using MRC at the relays. The use of MRC at the relays implies that each relay overhears the signals from the source and all previous relays and combines them using MRC. The proposed protocol differs from most of existing relaying protocol by the fact that it combines both incremental relaying and MRC at the relays for a multinode topology. Our analyses for a decode-and-forward mode show that: (i) compared to existing multinode relaying schemes, the proposed scheme can essentially achieve the same SEP performance but with less average number of time slots, (ii) compared to schemes without MRC at the relays, the proposed scheme can approximately achieve a 3 dB gain.

Original languageEnglish (US)
Title of host publication4th International Conference on Communications and Networking, ComNet 2014 - Proceedings
PublisherIEEE Computer Society
ISBN (Print)9781479937615
DOIs
StatePublished - Jan 1 2014
Event4th International Conference on Communications and Networking, ComNet 2014 - Hammamet, Tunisia
Duration: Mar 19 2014Mar 22 2014

Publication series

Name4th International Conference on Communications and Networking, ComNet 2014 - Proceedings

Conference

Conference4th International Conference on Communications and Networking, ComNet 2014
CountryTunisia
CityHammamet
Period03/19/1403/22/14

ASJC Scopus subject areas

  • Computer Networks and Communications

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