Relay selection issues for amplify-and-forward cooperative systems with interference

Ioannis Krikidis, John Thompson, Stephen McLaughlin

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

9 Citations (Scopus)

Abstract

In this paper, an Amplify-and-Forward (AF) cooperative strategy in interference limited networks is considered. In contrast to previously reported work, where the effect of interference is ignored, the effect of multi-user interference in AF schemes is analyzed. It is shown that the interference changes the statistical description of the conventional AF protocol and a statistical expression is subsequently derived. Asymptotic analysis of the expression shows that interference limits the diversity gain of the system and the related channel capacity is bounded by a stationary point. In addition, it is proven that previously proposed relay selection criteria for multi-relay scenarios become inefficient in the presence of interference. Based on a consideration of the interference term, two new selection criteria suitable for different system set-ups are proposed. A theoretical framework for selecting when to apply the proposed selection criteria is also presented.

Original languageEnglish
Title of host publicationIEEE Wireless Communications and Networking Conference, 2009
PublisherIEEE
Pages362-367
Number of pages6
ISBN (Electronic)978-1-4244-2948-6
ISBN (Print)978-1-4244-2947-9
DOIs
Publication statusPublished - 2009
EventIEEE Wireless Communications and Networking Conference - Budapest, Hungary
Duration: 5 Apr 20098 Apr 2009

Conference

ConferenceIEEE Wireless Communications and Networking Conference
Abbreviated titleWCNC 2009
CountryHungary
CityBudapest
Period5/04/098/04/09

Cite this