Performance Evaluation of Best Path Selection Protocol in Multi-hop Relaying Networks under Joint Impact of Co-channel Interference and Hardware Impairments

Abstract

This paper evaluates outage probability (OP) of a path-selection protocol in multi-path multi-hop decode-and-forward (DF) relaying networks. In the considered protocol, relying on the end-to-end signal to interference-plus-noise ratio (SINR), the best path between the source and the destination is selected to enhance the outage performance under joint impact of co-channel interference and hardware imperfection. We derive exact and asymptotic closed-form expressions of the end-to-end OP for the considered protocol over Rayleigh fading channels. The simulation results are then presented to validate the theoretical results.

Performance Enhancement for Multihop Cognitive DF and AF Relaying Protocols under Joint Impact of Interference and Hardware Noises: NOMA for Primary Network and Best‐Path Selection for Secondary Network

“…In addition, the performance of the proposed protocols is better as C S,th decreases. It is worth noting that for M-DF-P, the simulation results (denoted by Sim) verify the theoretical ones, where Exact denotes the theoretical results obtained by using (46) and Asymp denotes the approximate expression of the e2e OP at high P PT regimes (see (48)). For M-AF-P, there exists gap between the simulation results (Sim) and the theoretical results (LowB) because the usage of (56) for evaluating the outage performance.…”

“…Moreover, unlike [24-26, 34, 35], the joint impact of CCI and HI is studied in this paper. Although references [17,48] evaluated the performance of M-DF-P in the presence of the limited interference and hardware noises, the authors in [17] only considered a single-path scheme, and reference [48] did not consider the UCR environment. In addition, our proposed models consider both DF and AF protocols, while only M-DF-P is studied in [17,48].…”