论文标题
多对无线继电器系统中的速率公平性优化
Optimization of Rate Fairness in Multi-Pair Wireless-Powered Relaying Systems
论文作者
论文摘要
这封信考虑了多对解码和前向继电器网络，其中在能量约束的继电器上采用了拆分（PS）协议，以提供同时提供无线信息和能量收集（EH）。为了实现EH的更高效率，我们通过合并交流电流（AC）计算逻辑来提出一种基于PS的EH架构，该逻辑可直接将无线收获的AC能量用于计算块。在非线性EH电路下，我们的目标是最大化用户对之间端到端速率的公平性，但要受到功率约束，从而导致了非凸问题。我们提出了一种迭代算法，以通过利用内部近似框架来实现该挑战性问题的次优和有效的解决方案。数值结果表明，所提出的算法的表现优于传统的直流计算和其他基线方案。
This letter considers a multi-pair decode-and-forward relay network where a power-splitting (PS) protocol is adopted at the energy-constrained relay to provide simultaneous wireless information and energy harvesting (EH). To achieve higher efficiency of EH, we propose a new PS-based EH architecture at the relay by incorporating an alternating current (AC) computing logic, which is employed to directly use the wirelessly harvested AC energy for computational blocks. Under a nonlinear EH circuit, our goal is to maximize the fairness of end-to-end rate among user pairs subject to power constraints, resulting in a nonconvex problem. We propose an iterative algorithm to achieve a suboptimal and efficient solution to this challenging problem by leveraging the inner approximation framework. Numerical results demonstrate that the proposed algorithm outperforms the traditional direct current computing and other baseline schemes.
