A diversity analysis for block-fading Amplify-and-Forward systems

Ioannis Krikidis, John S. Thompson, S. McLaughlin

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

Abstract

In this paper, we deal with the performance of nonorthogonal Amplify-and-Forward (NAF) protocols over block-fading channels. In contrast with previous studies, which assume that the channel remains constant over the whole cooperative frame, here we relax this constraint and assume a block fading channel which changes during the cooperation. Despite this additional channel diversity degree, channel inversion amplification schemes are unable to increase the diversity gain of the system due the high correlation between the two simultaneous diversity branches. We propose a fixed gain amplification factor which efficiently uses the additional diversity degree of the channel and recovers the diversity loss associated with channel inversion schemes. The diversity analysis is based on some well-defined capacity bounds which follow the diversity order of the true capacity.

Original languageEnglish
Title of host publication1st UK-India International Workshop on Cognitive Wireless Systems 2009
PublisherIEEE
ISBN (Electronic)9781457701832
DOIs
Publication statusPublished - 2009
Event1st UK-India International Workshop on Cognitive Wireless Systems 2009 - New Delhi, India
Duration: 11 Dec 200912 Dec 2009

Conference

Conference1st UK-India International Workshop on Cognitive Wireless Systems 2009
Abbreviated titleUKIWCWS 2009
Country/TerritoryIndia
CityNew Delhi
Period11/12/0912/12/09

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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