Outage performance analysis of SIMO multiple access interference channels with cognitive relay

Md Zahurul I Sarkar, Tharmalingam Ratnarajah

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

Abstract

In this paper, we analyze the outage performance of a cognitive relay assisted single-input multiple-output (SIMO) cognitive interference channel, where multiple secondary users each with single antenna wish to communicate with the secondary receiver equipped with multiple antennas through Rayleigh fading channels in the presence of a primary user. We assume that secondary users transmit simultaneously with the primary user over the same channel instead of waiting for an idle channel which is traditional for a cognitive radio. We consider both the cases when cognitive relay is present or not and derive the expressions for mutual information received at the primary and secondary receivers. We also present the closed form expressions for the outage probabilities and complementary cumulative distribution functions (CCDFs) of mutual information received at the primary and secondary receivers in the absence of cognitive relay. Our results show that with the help of a cognitive relay, not only both the primary and multiple secondary users are able to communicate with intended receivers compensating interferences created at their receivers, but also the outage performance of primary and secondary users are improved due to the additional diversity obtained via cognitive relaying.

Original languageEnglish
Title of host publication2010 IEEE Symposium on New Frontiers in Dynamic Spectrum, DySPAN 2010
DOIs
Publication statusPublished - 11 Jun 2010
Event2010 IEEE Symposium on New Frontiers in Dynamic Spectrum, DySPAN 2010 - Singapore, United Kingdom
Duration: 6 Apr 20109 Apr 2010

Conference

Conference2010 IEEE Symposium on New Frontiers in Dynamic Spectrum, DySPAN 2010
Country/TerritoryUnited Kingdom
CitySingapore
Period6/04/109/04/10

Keywords

  • Cognitive relay
  • Multiple secondary users
  • Outage probability
  • SIMO multiple access channel

Fingerprint

Dive into the research topics of 'Outage performance analysis of SIMO multiple access interference channels with cognitive relay'. Together they form a unique fingerprint.

Cite this