Throughput Analysis of Full-Duplex Energy Harvesting Relaying Systems with Direct Link

According to the three-node transmission system, the amplify-and-forward cooperative relaying scheme is investigated by combining time switching-based energy harvesting and full-duplex technologies. Consider a direct link between the source and destination, the full-duplex relay node adopts antenna selection technology to minimize the relay self-interference, and the destination node adopts the maximum ratio combining technology to maximize the received signal-to-noise ratio at the destination. Under the delay-limited transmission mode, the approximate closed form expression for systematical throughput is derived for the self-interference channel gain is constant. In order to discuss the performance of the systematical throughput, the optimal destination selection strategy and adaptive relay selection strategy are applied. As shown in figure 4, when the transmit power of the source is 30 dB, In terms of systematical throughput, the algorithm in this paper increases by 0.22 bits/s/Hz and 0.68 bits/s/Hz, respectively, compared with the other two algorithms. Numerical analysis and Monte Carlo simulations show that, the systematical throughput performance can be improved by increasing whether the number of relays, the number of destinations or the energy harvesting efficiency.