Closed-Form Outage Probability Expressions for Multihop Cognitive Radio Network with Best Path Selection Schemes in RF Energy Harvesting Environment

In this paper, a comparative study of parallel best path selection (PBPS) and immediate best path selection IBPS in terms of outage probability and throughput has been done in a multi hop cognitive radio network. The closed form expressions for the outage probability of secondary network in PBPS protocol as well as IBPS protocol in multihop scenario have been derived. We also find the impact of the number of parallel paths in multihop scenario on the outage probability and throughput of secondary network. The performance of PBPS scheme is compared with IBPS scheme. An optimum value of initial harvesting time for secondary nodes ((tau )) to achieve maximum throughput is also found for both the path selection schemes.