Dual branch transmit switch-and-stay diversity for underlay cognitive networks

Mostafa Sayed, Mohamed Abdallah, Mohamed Slim Alouini, Khalid Qaraqe

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

4 Citations (Scopus)

Abstract

In this paper, we study applying dual branch transmit switch-and-stay combining (SSC) technique for underlay cognitive radio (UCR) networks. In UCR, the secondary user is allowed to share the spectrum with the primary (licensed) user under the condition that interference at the primary receiver is below a predetermined threshold. Assuming binary phaseshift keying (BPSK) modulation and Rayleigh fading channels, we develop a closed form expression for the average bit error rate (BER) of the secondary link as a function of the switching threshold. We then find a closed form expression for the optimal switching threshold in the sense of minimizing the average BER. For the sake of comparison we derive an expression for the average BER of the dual branch transmit selection combining (SC) technique. We finally investigate the effect of correlation between secondary and interference channels on the average BER and the associated optimal switching threshold.

Original languageEnglish
Title of host publication2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring - Proceedings
DOIs
Publication statusPublished - 2011
Event2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring - Budapest, Hungary
Duration: 15 May 201118 May 2011

Other

Other2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring
CountryHungary
CityBudapest
Period15/5/1118/5/11

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Keywords

  • Multiple antenna systems
  • Transmit selection diversity
  • Transmit switched diversity
  • Underlay cognitive radio

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Applied Mathematics

Cite this

Sayed, M., Abdallah, M., Alouini, M. S., & Qaraqe, K. (2011). Dual branch transmit switch-and-stay diversity for underlay cognitive networks. In 2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring - Proceedings [5956381] https://doi.org/10.1109/VETECS.2011.5956381