Outage Performance Analysis for a DF Based Hybrid Scheme over Log-normal Fading Channels

In a decode-and-forward (DF) wireless energy harvesting (EH) relaying network, where a hybrid power-time splitting (HPTS) scheme is considered. We study the outage performance of one-way DF relaying network over log-normal fading channels, which are applicable to the indoor environment. We analyse the performance of the proposed scheme under the conditions considering the statistical or instantaneous channel state information (CSI). Analytical expressions of outage probability and achievable throughput are derived based on the statistical CSI, furthermore, we can get the optimal time switching factor and power splitting factor. For the instantaneous CSI, the power splitting factor is optimized to minimize the outage probability. In order to find the optimal time switching factor, a bisection iteration method is adopted. The simulation results show that the outage probability and throughput of the hybrid protocol outperform the existing power splitting-based relaying (PSR) scheme.