This paper proposes a novel multi-path and multi-hop wireless powered sensor network in case of hardware impairment, constituting an energy node, one source node, single sink node, and a series of distributed relay sensor nodes, where the energy node transmits wireless energy to all terminals in the first stage, and the relay sensor nodes relay the information of the source node to the sink node in the second stage. There exists M available paths between the source node and sink node, one of which is chosen for serving source-sink communication. To enhance the minimum achievable data rate, we propose a multi-hop communication protocol based on time-division-multiple-access and an optimal throughput path algorithm. We formulate the time allocation optimization problem about energy and information transmission of the proposed multi-hop cooperation, and confirm through abundant simulation experiments that the proposed scheme can availably improve user unfairness and spectral efficiency, and thus enhance its throughput performance.

本文提出了一种新的多径多跳无线供电传感器网络，在硬件损坏的情况下，由一个能源节点、一个源节点、一个汇节点和一系列分布式中继传感器节点组成，其中能源节点传输无线第一阶段为所有终端提供能量，第二阶段中继传感器节点将源节点的信息中继给宿节点。存在M源节点和宿节点之间的可用路径，其中之一被选择用于服务源-宿通信。为了提高可达到的最小数据速率，我们提出了一种基于时分多址和最优吞吐量路径算法的多跳通信协议。我们制定了所提出的多跳协作的能量和信息传输的时间分配优化问题，并通过大量的仿真实验证实所提出的方案可以有效地改善用户不公平性和频谱效率，从而提高其吞吐量性能。