多用户无线信能同传系统能效优化方法

针对多用户无线信能同传系统下行链路，研究多用户无线信能同传系统能效优化方法，提出了一种改进型Dinkelbach方法。首先利用Dinkelbach方法将分式问题转换为减式问题，再通过引入冗余变量将和速率最大化问题等价为加权均方误差最小化相关问题，并利用凹凸优化的思想将该问题近似为二阶锥规划凸问题，最后利用块坐标算法对此问题进行迭代求解得出改进型Dinkelbach方法。仿真结果表明，该方法能有效改善系统能量效率。

Energy efficiency optimization method for multi-user simultaneous wireless information and power transfer

Joint transceiver design for achieving energy efficiency maximization was studied in multi-user downlink systems with simultaneous wireless information and power transfer. An improved Dinkelbach method was proposed. Specifically, the problem is converted to a series of subtraction form problems following the basic idea of Dinkelbach method. By introducing a set of auxiliary variables, the subtraction form problem is further equivalently cast as a weighted mean-square-error minimization problem, which is solved by using concave-convex procedure and second-order-cone programming（SOCP）. Simulation results validates the efficiency of the proposed method.