Performance analysis of selective cooperation in underlay cognitive networks over Rayleigh channels

Syed Imtiaz Hussain, Mohamed M. Abdallah, Mohamed Slim Alouini, Mazen Hasna, Khalid Qaraqe

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

30 Citations (Scopus)

Abstract

Underlay cognitive networks should follow strict interference thresholds to operate in parallel with primary networks. This constraint limits their transmission power and eventually the area of coverage. Therefore, it is very likely that the underlay networks will make use of relays to transmit signals to the distant secondary users. In this paper, we propose a secondary relay selection scheme which maximizes the end-to-end signal to noise ratio (SNR) for the secondary link while keeping the interference levels to the primary network below a certain threshold. We derive closed form expressions for the probability density function (PDF) of the SNR at the secondary destination, average bit error probability and outage probability. Analytical results are verified through simulations which also give insight about the benefits and tradeoffs of the selective cooperation in underlay cognitive networks. It is shown that, in contrast to non-cognitive selective cooperation, this scheme performs better in low SNR region for cognitive networks.

Original languageEnglish
Title of host publication2011 IEEE 12th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2011
Pages116-120
Number of pages5
DOIs
Publication statusPublished - 16 Sep 2011
Event2011 IEEE 12th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2011 - San Francisco, CA, United States
Duration: 26 Jun 201129 Jun 2011

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC

Other

Other2011 IEEE 12th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2011
CountryUnited States
CitySan Francisco, CA
Period26/6/1129/6/11

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Keywords

  • cognitive radio
  • overlay networks
  • relay selection etc.
  • underlay networks
  • user cooperation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Information Systems

Cite this

Hussain, S. I., Abdallah, M. M., Alouini, M. S., Hasna, M., & Qaraqe, K. (2011). Performance analysis of selective cooperation in underlay cognitive networks over Rayleigh channels. In 2011 IEEE 12th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2011 (pp. 116-120). [5990375] (IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC). https://doi.org/10.1109/SPAWC.2011.5990375