This letter studies the joint transmit (tx) power allocation and receive (rx) power splitting scheme for simultaneous wireless information and power transfer (SWIPT) systems. To solve the battery depletion problem, the receivers' battery status information (BSI) is proposed to be taken into account in our scheme. With the BSI, constraints on the feasible maximum received data rate and harvested energy at receivers are newly induced. The proposed scheme is formulated as an optimization problem to maximize the sum-rate with the rate/energy requirement constraints and the newly induced constraints. To solve the optimization problem, the receivers are firstly classified according to their battery levels, then the optimal solutions are derived by the proposed alternative optimization technique-based algorithm. Simulation results illustrate that the proposed scheme can prolong the battery lifetime and avoid the receivers being to power off.

中文翻译：

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具有电池状态信息的 SWIPT 系统的联合 Tx 功率分配和 Rx 功率分配


这封信研究了同步无线信息和功率传输 (SWIPT) 系统的联合发射 (tx) 功率分配和接收 (rx) 功率分配方案。为了解决电池耗尽问题，建议在我们的方案中考虑接收器的电池状态信息（BSI）。通过 BSI，新引入了对接收器处可行的最大接收数据速率和收获能量的约束。所提出的方案被表述为一个优化问题，以最大化速率/能量需求约束和新引入的约束的总速率。为了解决优化问题，首先根据电池电量对接收器进行分类，然后通过所提出的基于替代优化技术的算法得出最佳解决方案。仿真结果表明，该方案可以延长电池寿命并避免接收机断电。