全双工系统中基于最大加权和速率的信息与能量同传优化方案

发布时间：2018-11-05 12:50

【摘要】：针对目前全双工无线系统中信息与能量同传(SWIPT)方案存在的问题,本文提出了一种基于最大加权和速率(WSR)的多用户全双工系统SWIPT传输优化方案.与传统传输方案不同的是,该方案的接入点和各用户都工作在全双工模式,下行信道实现信息与能量同时传输,接收机将自干扰信号和互干扰信号都视为可利用的射频信号进行能量收集.为此,本文设计了最大化WSR为目标的时隙分配因子和功率分裂因子联合优化方案,进一步,利用等价条件及Lagrange乘子法得到最优时隙分配因子最优解的闭合表达式,提出了一种基于黄金分割法迭代来优化功率分裂因子的算法,证明了收敛性,并从理论上分析了复杂度.仿真实验结果证实本文方案和算法具有性能优势和较低复杂度.
[Abstract]:In order to solve the problem of (SWIPT) scheme for simultaneous interpretation of information and energy in full duplex wireless systems, this paper proposes an optimal SWIPT transmission scheme for multiuser full-duplex systems based on maximum weighted and rate (WSR). Different from the traditional transmission scheme, the access points and users of the scheme work in full duplex mode, and the downlink channel realizes the simultaneous transmission of information and energy. The receiver regards both self-interference signal and mutual interference signal as available RF signals for energy collection. In this paper, a joint optimization scheme of slot allocation factor and power splitting factor for maximizing WSR is designed. Furthermore, the closed expression of the optimal time slot assignment factor is obtained by using the equivalence condition and the Lagrange multiplier method. An algorithm for optimizing power splitting factor based on golden section iteration is proposed. The convergence is proved and the complexity is analyzed theoretically. The simulation results show that the proposed scheme and algorithm have the advantages of performance and low complexity.
【作者单位】：重庆邮电大学个人通信研究所;
【基金】：国家自然科学基金(批准号:61271259,61301123,61471076,61601070) 重庆市教委科学技术研究项目(批准号:KJ130536,KJ-1600411) 重庆市基础与前沿研究计划项目(批准号:CSTC2016jcyj A0455) 长江学者和创新团队发展计划(批准号:IRT1299) 重庆市科委重点实验室专项经费资助项目
【分类号】：TN92

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