It is expected that many small battery-operated devices will connect to next generation of cellular networks. In this work, a two-way wireless link is considered, where due to slow variations of the channel, forward link (FL) and reverse link channels are reciprocal, and the remote device’s battery is charged via wireless energy harvesting. We analyze the performance of a two-way link setup, with very low complexity signal processing at the node that relies on battery, and consists of antenna selection and maximum ratio combining-based multiple-input single-output (MISO) and multiple-input multiple-output (MIMO) techniques, wherein FL simultaneous wireless information and power transmission is assumed to be utilized. By mathematical tractability, a closed-form analytical expression for probability of outage, ergodic capacity and bit error rate are derived and compared with simulation results. It is shown that the assumed low complexity setup achieves full diversity in both cases of MISO and MIMO.

预计许多小型电池供电的设备将连接到下一代蜂窝网络。在这项工作中，考虑了双向无线链接，由于通道的缓慢变化，前向链接（FL）和反向链接通道是相互的，并且通过无线能量收集为远程设备的电池充电。我们分析双向链路设置的性能，该方法在依赖电池的节点上具有非常低复杂度的信号处理，并且包括天线选择和基于最大比率组合的多输入单输出（MISO）和多输入多输出（MIMO）技术，其中假定同时使用FL无线信息和功率传输。通过数学易处理性，是停机概率的闭式分析表达式，得出遍历容量和误码率，并与仿真结果进行比较。结果表明，假设的低复杂度设置在MISO和MIMO的情况下均实现了完全分集。