Performance Analysis of Optimum Combining Under the Impact of Multiple Primary Interferers in Underlay Cognitive Radios
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چکیده
This paper investigates the performance of optimum combining (OC) in underlay cognitive radio (CR) in the presence of multiple primary user’s transmitters (PUTxs) in flat Rayleigh fading channels. The number of PUTxs Lt and antennas at secondary user receiver (SU-Rx) Kr are related as Lt ≥ Kr. Closed form expressions are obtained for the ergodic capacity and average bit error rate (BER) of the CR-OC system. Analytical results are validated through simulations. Performance of proposed system is compared with the Maximal ratio combining (MRC) in cognitive radio (CR-MRC).
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تاریخ انتشار 2017