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弹箭与制导学报 >

2023 , Vol. 43 >Issue 2: 7 - 11

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2023.02.002

一种提高无线携能网络吞吐量的优化算法

  • 米洪 ,
  • 郑莹
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  • 南京交通职业技术学院电子信息工程学院,江苏 南京 211188

米洪(1973—), 男, 教授, 硕士, 研究方向: 云计算大数据技术、 信息安全技术。

收稿日期: 2022-05-13

  网络出版日期: 2025-02-24

基金资助

2021年江苏省高校“青蓝工程”培养对象优秀教学团队项目

南京交通职业技术学院“无线携能通信系统优化技术研究(JZ2207)”

“基于云边协同的车辆信息交互系统(JZ2103)”项目资助

收起

An Optimization Algorithm for Wireless Powered Cooperative Communication Network to Improve Throughput

  • MI Hong ,
  • ZHENG Ying
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  • School of Electronics and Information Engineering, Nanjing Vocational Institute of Transport Technology,Nanjing 211188, Jiangsu, China

Received date: 2022-05-13

  Online published: 2025-02-24

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摘要

为提高无线携能协作通信网络的吞吐量,提出基于传输时间分配和转发节点选举的吞吐量最大化算法(TARM)。先建立最大化吞吐量的目标函数,然后采用两步法求解:1)选择具有大信噪比的转发节点分配给用户;2)在转发节点固定情况下,建立基于Lagrange函数的目标函数,并通过梯度法迭代更新Lagrange乘子。仿真分析表明:通过合理选择转发节点可有效提升网络的吞吐量,TARM算法的吞吐量逼近于穷举搜索法。

关键词： 无线携能协作通信网; 吞吐量最大化; 转发节点选举; Lagrange法; 梯度算法

本文引用格式

米洪 , 郑莹 . 一种提高无线携能网络吞吐量的优化算法[J]. 弹箭与制导学报, 2023 , 43(2) : 7 -11 . DOI: 10.15892/j.cnki.djzdxb.2023.02.002

Abstract

In order to improve the throughput of wireless powered cooperative communication networks (WPCCN), transmission time allocation and relay selection-based throughput maximization (TARM) algorithm is proposed in this paper. In TARM, objective function of maximizing throughput is established first and then solved by two-step method. The first step is to select relay with large SNR and assign it to user. In the second step, the objective function based on Lagrange function is established for a predetermined relay allocation scheme, and Lagrange multiplier is updated iteratively by gradient method. Simulation results show that the TARM algorithm performs very close to exhaustive search algorithm and the sum throughput of the network can be increased significantly by using a proper relay selection technique.

Key words： wireless powered cooperative communication network; throughput maximization; relay selection; Lagrange algorithm; gradient method

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