能量收集和能量协作菱形信道的功率分配策略

Power Allocation Strategy for Energy Harvesting and Energy Cooperation Diamond Channels

基于能量收集和双向能量协作的菱形信道,提出一种实现系统端到端的吞吐量最大化的功率分配和能量转移策略.该策略将能量收集的高斯菱形信道模型扩展为双向能量协作的菱形通信网络模型,在满足传输节点间能量和数据因果关系约束条件下,构建了系统吞吐量优化模型.通过延迟策略将问题分解为功率分配问题和各时隙的能量转移问题,利用定向注水算法求解实际消耗功率分配,原问题的最优解最终通过求解所分离的两个问题获得.仿真结果表明,与基于无能量协作和基于单向能量协作的功率分配策略相比,本文的功率分配策略显著提高了系统的吞吐量.

Based on energy harvesting and bi-directional energy cooperation,a power allocations and energy transfer policies by maximizing the end-to-end throughput in the diamond channel is proposed. The policies extends the Gaussian diamond channel model of energy harvesting to the diamond communication network model of bi-directional energy cooperation,and the system throughput optimization model is constructed under the causality constraints of the energy and data between transmission nodes. In this way,by separating the former problem into two problems,we can get the optimal solution of the problem. Simulation results show that proposed power allocation policies significantly improves the system throughput,compared with the power allocation policies based on energy no-cooperation and uni-directional energy cooperation of diamond channel.