Ergodic secrecy capacity analysis for cooperative communication with relay selection under non-identical distribution
Esa R. Alotaibi, Khairi Ashour Hamdi · 2016
In this paper, ergodic secrecy capacity is analyzed in a cooperative communication network, for an independent but non-identically distributed (i.n.i.d) Rayleigh fading channel. By using multi-trusted decode and forward relays, the model assumes direct links between a sender (Alice) and receiver nodes (Bob and an eavesdropper); in addition both Alice and the relay have perfect knowledge about the eavesdropper's channel state information (CSI). The protocol employed herein selects the best relay with the highest signal-to-noise ratio (SNR) in relation to the destination (Bob), while maximum ratio combining (MRC) is employed at Bob and the eavesdropper's terminals. Finally, the theoretical analysis is validated through simulation, and the results show that performance is enhanced with an increasing number of relays, in the event of a direct link between the sender and the receiver's terminals.