Abstract
In the present work, an underlay cognitive radio network (CRN) is considered to examine the secrecy performance for Simultaneous Wireless Information and Power Transfer (SWIPT) with imperfect channel state information (CSI). The eavesdropper as well as secondary receivers are considered to have energy harvesting potential. The eavesdropper is the malicious node that tries to sniff the information from the main link and degrades the performance of the system. The maximal ratio combining (MRC) technique is considered at all the nodes to optimize the signal from multiple antennas. Further, to deal with a more practical scenario, the path losses are also considered and therefore, the imperfect CSI is considered at all the receiving nodes. The main objective is to derive the exact, intercept and asymptotic secrecy outage probability for the Rayleigh fading channel. Moreover, the best antenna selection is also considered at the secondary transmitter for data transmission. The validation of the analytical result is done with the help of Monte-Carlo simulation.
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