通信学报 ›› 2018, Vol. 39 ›› Issue (2): 43-52.doi: 10.11959/j.issn.1000-436x.2018023

• 学术论文 • 上一篇    下一篇

能量受限全双工双向中继系统的波束成形设计

王伟1,2,3,安立源1,章国安1,3,张士兵1,2,3   

  1. 1 南通大学电子信息学院，江苏 南通 226019
    2 南通先进通信技术研究院，江苏 南通 226019
    3 南通大学通科微电子学院，江苏 南通 226019
  • 修回日期:2017-12-10 出版日期:2018-02-01 发布日期:2018-03-28
  • 作者简介:王伟（1983-），男，江苏泗洪人，博士，南通大学副教授、硕士生导师，主要研究方向为无线携能通信、全双工通信和海域宽带通信。|安立源（1994-），男，河南方城人，南通大学硕士生，主要研究方向为无线携能通信、全双工通信。|章国安（1965-），男，江苏南通人，博士，南通大学教授、博士生导师，主要研究方向为通信信号处理、认知车载无线通信网络。|张士兵（1962-），男，江苏南通人，博士，南通大学教授、博士生导师，主要研究方向为通信信号处理、认知无线电技术与宽带数字通信。
  • 基金资助:
    国家自然科学基金资助项目(61771263);国家自然科学基金资助项目(61371111);国家自然科学基金资助项目(61371112);国家自然科学基金资助项目(61371113);江苏高校品牌专业建设工程基金资助项目(PPZY2015B135);南通市科技计划基金资助项目(GY22017013);南通大学—南通智能信息技术联合研究中心开放课题基金资助项目(KFKT2017B02);南通大学—南通智能信息技术联合研究中心开放课题基金资助项目(KFKT2016B02)

Beamforming design for energy-constrained full-duplex two-way relaying system

Wei WANG1,2,3,Liyuan AN1,Guoan ZHANG1,3,Shibing ZHANG1,2,3   

  1. 1 School of Electronics and Information,Nantong University,Nantong 226019,China
    2 Nantong Research Institute for Advanced Communication Technologies,Nantong 226019,China
    3 Tongke School of Microelectronics,Nantong University,Nantong 226019,China
  • Revised:2017-12-10 Online:2018-02-01 Published:2018-03-28
  • Supported by:
    The National Natural Science Foundation of China(61771263);The National Natural Science Foundation of China(61371111);The National Natural Science Foundation of China(61371112);The National Natural Science Foundation of China(61371113);The Top-Notch Academic Programs Project of Jiangsu Higher Education Institutions(PPZY2015B135);The Science and Technology Program of Nantong(GY22017013);The Open Research Fund of Nantong University-Nantong Joint Research Center for Intelligent Information Technology(KFKT2017B02);The Open Research Fund of Nantong University-Nantong Joint Research Center for Intelligent Information Technology(KFKT2016B02)

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摘要：

提出了一种基于无线信息与能量同时传输的波束成形设计方案。该方案在满足源节点信干噪比和中继传输功率等约束条件下，通过联合优化波束成形向量、功分因子和发射功率等参数实现能量收集的最大化。此设计是一个非凸的优化问题，为了有效求解该问题，采用分步优化方法将原问题分解成3个子问题。提出利用半定松弛技术和约束激活准则分别求解3个子问题，并通过收敛迭代算法求得原问题的次优解。仿真结果表明，所提联合优化算法相比预编码、资源分配算法具有更好的性能，且与传统的半双工算法相比，在计算复杂度略增的前提下其能量收集效率可提升2~3倍。

关键词: 能量收集, 无线信息与能量同时传输, 波束成形, 全双工, 双向中继

Abstract:

A beamforming design was proposed under simultaneous wireless information and power transfer (SWIPT) protocol.A utility optimization problem was considered aiming to maximize the harvested energy by jointly optimizing the beamforming matrix,the power splitting ratio at the relay and the transmit powers at the sources.Since the formulated joint optimization problem was nonconvex,it was difficult or even intractable to obtain the global optimal solution.To overcome this issue,the objective problem into three subproblems was decoupled which could be solved by the proposed semidefinite relaxation technique and the derived constraints activation solution,respectively.The solution was finally obtained with the proposed convergent iterative algorithm.Simulation results show that the proposed joint optimization scheme achieves the optimal performance.Compared with the traditional half-duplex (HD) algorithm,the proposed algorithm can obtain 2~3 times energy harvesting (EH) efficiency improvement,while the computational complexity increases slightly.

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