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

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    Type
    Conference Paper
    Authors
    Sayed, Mostafa M.
    Abdallah, Mohamed M.
    Alouini, Mohamed-Slim cc
    Qaraqe, Khalid A.
    KAUST Department
    Communication Theory Lab
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2011-05
    Permanent link to this record
    http://hdl.handle.net/10754/564377
    
    Metadata
    Show full item record
    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. © 2011 IEEE.
    Citation
    Sayed, M., Abdallah, M., Alouini, M.-S., & Qaraqe, K. A. (2011). Dual Branch Transmit Switch-and-Stay Diversity for Underlay Cognitive Networks. 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring). doi:10.1109/vetecs.2011.5956381
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)
    Conference/Event name
    2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring
    ISBN
    9781424483310
    DOI
    10.1109/VETECS.2011.5956381
    ae974a485f413a2113503eed53cd6c53
    10.1109/VETECS.2011.5956381
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Electrical Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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