Performance analysis of SWIPT-enabled two-way decode-and-forward relay network under κ-μ fading

This research investigates the performance of two-way relaying (TWR) networks enabling simultaneous wireless information and power transfer (SWIPT) under the generalized kappa-mu fading model, known for its flexibility in characterizing diverse wireless propagation environments. TWR is employed to facilitate efficient bidirectional communication, utilizing a time-switching (TS) scheme at the relay to manage energy harvesting and information transfer processes simultaneously. The decode-and-forward protocol is adopted to enhance information flow reliability, while selection combining at the destination improves signal reception from both direct and relay-assisted links, thereby boosting overall system performance. Closed-form expressions are derived for key performance metrics, including outage probability, system throughput, and system energy efficiency, to provide a comprehensive understanding of the system's behavior. The analysis highlights the impact of critical factors such as the TS factor, energy conversion efficiency, threshold target rates, and kappa-mu fading parameters on system performance. The theoretical results are validated through extensive Monte Carlo simulations, demonstrating the accuracy and robustness of the proposed analytical framework.