Exact Outage Probability of Two-Way Decode-and-Forward Scheme with Energy Harvesting from Intermediate Relaying Station
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In this paper, we propose a two-way energy-harvesting scheme (called a TWEH protocol) in which an intermediate full-power relay provides energy for two source nodes and implements digital network coding to compress received data from these source nodes. In the proposed TWEH protocol, two source nodes do not have enough energy to exchange data with each other, they have to collect energy from the intermediate relay through wireless signals before transmitting their data. We analyze and evaluate the system performance in terms of exact closed-form outage probabilities over Rayleigh fading channels. For comparison purposes, a conventional two-way scheme without using digital network coding and energy harvesting (called a TWNEH protocol) is also obtained. Results show that the proposed TWEH protocol outperforms the TWNEH protocol. In addition, the theoretical analyses are verified by performing Monte Carlo simulation.