双向携能通信网络中子载波和功率联合分配

Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2020-09-28 Cooperative journals: 《计算机应用研究》

薛亮 李娜 赵辉 王燕龙 徐哲壮

Abstract： This paper investigated the resource allocation problem of the synchronous wireless information and power transfer (SWIPT) two-way communication networks based on orthogonal frequency division multiplexing. This paper proposes a joint subcarrier and power allocation (JSPA) algorithm, which is neither dependent upon the power splitting nor the time switching schemes and simplifies the design of SWIPT principles, transfers information and energy using different subcarriers. Considering the saturation characteristic of actual energy harvesting circuit, the joint design algorithm, which is developed by using Lagrange dual and subgradient methods and thus is based on the nonlinear energy harvesting model, is formulated to minimize the energy consumption of networks under condition that the required rate of the destination is satisfied. The numerical simulation results validate both the JSPA’s effectiveness in the joint allocation of network resources and its high energy efficiency.

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