Reactive relay selection in underlay cognitive networks with fixed gain relays

Syed Imtiaz Hussain, Mohamed Slim Alouini, Khalid Qaraqe, Mazen Hasna

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

29 Citations (Scopus)

Abstract

Best relay selection is a bandwidth efficient technique for multiple relay environments without compromising the system performance. The problem of relay selection is more challenging in underlay cognitive networks due to strict interference constraints to the primary users. Generally, relay selection is done on the basis of maximum end-to-end signal to noise ratio (SNR). However, it requires large amounts of channel state information (CSI) at different network nodes. In this paper, we present and analyze a reactive relay selection scheme in underlay cognitive networks where the relays are operating with fixed gains near a primary user. The system model minimizes the amount of CSI required at different nodes and the destination selects the best relay on the basis of maximum relay to destination SNR. We derive close form expressions for the received SNR statistics, outage probability, bit error probability and average channel capacity of the system. Simulation results are also presented to confirm the validity of the derived expressions.

Original languageEnglish
Title of host publication2012 IEEE International Conference on Communications, ICC 2012
Pages1784-1788
Number of pages5
DOIs
Publication statusPublished - 1 Dec 2012
Event2012 IEEE International Conference on Communications, ICC 2012 - Ottawa, ON, Canada
Duration: 10 Jun 201215 Jun 2012

Publication series

NameIEEE International Conference on Communications
ISSN (Print)1550-3607

Other

Other2012 IEEE International Conference on Communications, ICC 2012
CountryCanada
CityOttawa, ON
Period10/6/1215/6/12

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Hussain, S. I., Alouini, M. S., Qaraqe, K., & Hasna, M. (2012). Reactive relay selection in underlay cognitive networks with fixed gain relays. In 2012 IEEE International Conference on Communications, ICC 2012 (pp. 1784-1788). [6364595] (IEEE International Conference on Communications). https://doi.org/10.1109/ICC.2012.6364595