On the achievable degrees of freedom of alternate MIMO relaying with multiple AF relays

Ki Hong Park, Mohamed Slim Alouini, Seong Ho Park, Young Chai Ko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

In this paper, we consider a two-hop relaying network where one source, one destination, and multiple amplify-and-forward (AF) relays equipped with M antennas operate in a half-duplex mode. In order to compensate for the inherent loss of capacity pre-log factor of 1/2 due to half-duplex relaying, we propose a new transmission protocol which combines alternate relaying and inter-relay interference alignment. We prove that the proposed scheme can (i) exploits M degrees of freedom (DOFs) and (ii) perfectly recover the pre-log factor loss if the number of relays is at least six. From our selected numerical results, we show that our proposed scheme gives significant improvement over conventional AF relaying which offers only M/2 DOFs.

Original languageEnglish
Title of host publication3rd International Conference on Communications and Networking, ComNet 2012
DOIs
Publication statusPublished - 2012
Event2012 3rd International Conference on Communications and Networking, ComNet 2012 - Hammamet, Tunisia
Duration: 2012 Mar 292012 Apr 1

Publication series

Name3rd International Conference on Communications and Networking, ComNet 2012

Other

Other2012 3rd International Conference on Communications and Networking, ComNet 2012
CountryTunisia
CityHammamet
Period12/3/2912/4/1

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Park, K. H., Alouini, M. S., Park, S. H., & Ko, Y. C. (2012). On the achievable degrees of freedom of alternate MIMO relaying with multiple AF relays. In 3rd International Conference on Communications and Networking, ComNet 2012 [6217739] (3rd International Conference on Communications and Networking, ComNet 2012). https://doi.org/10.1109/ComNet.2012.6217739