Performance of cluster-based cognitive multihop networks under joint impact of hardware noises and non-identical primary co-channel interference

• DOI: 10.12928/telkomnika.v17i1.9543
• Publication Date: 2019-04-22T01:49:15Z
• Authors: Pham Minh Nam; Tran Trung Duy; Phan Van Ca
• Keywords: Underlay; Secondary source; Co-channel interference; Transmitter power output; Network Performance

In this paper, we evaluate outage probability (OP) of a cluster-based multi-hop protocol operating on an underlay cognitive radio (CR) mode. The primary network consists multiple independent transmit/receive pairs, and the transmitters seriously cause co-channel interference (CCI) to secondary receivers. To improve performance for under joint impact CCI hardware imperfection, employ best relay selection at each hop. Moreover, destination is equipped with antennas uses combining (SC) technique enhance reliability data transmission last For evaluation, first derive exact formula OP which used calculate transmit power transmitters. Next, closed-form expression end-to-end derived over Rayleigh fading channels. We then perform Monte-Carlo simulations validate derivations. results present that caused by operations significantly impacts network.