TY - GEN
T1 - Dual branch transmit switch-and-stay diversity for underlay cognitive networks
AU - Sayed, Mostafa M.
AU - Abdallah, Mohamed M.
AU - Alouini, Mohamed-Slim
AU - Qaraqe, Khalid A.
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2011/5
Y1 - 2011/5
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/564377
UR - http://ieeexplore.ieee.org/document/5956381/
UR - http://www.scopus.com/inward/record.url?scp=80052009919&partnerID=8YFLogxK
U2 - 10.1109/VETECS.2011.5956381
DO - 10.1109/VETECS.2011.5956381
M3 - Conference contribution
SN - 9781424483310
BT - 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)
PB - Institute of Electrical and Electronics Engineers (IEEE)
ER -