计算机工程 ›› 2019, Vol. 45 ›› Issue (7): 147-153.doi: 10.19678/j.issn.1000-3428.0050869

• 移动互联与通信技术 • 上一篇    下一篇

半封闭走廊中无线信道传播特性分析与建模

王晶晶1, 刘伟1, 夏宇1, 罗嵘2, 胡顺仁1   

  1. 1. 重庆理工大学 电气与电子工程学院, 重庆 400054;
    2. 清华大学 电子工程系, 北京 100084
  • 收稿日期:2018-03-20 修回日期:2018-05-23 出版日期:2019-07-15 发布日期:2019-07-23
  • 作者简介:王晶晶(1996-),女,本科生,主研方向为无线传感器网络;刘伟(通信作者),讲师、博士;夏宇,硕士研究生;罗嵘,副教授、博士;胡顺仁,教授、博士。
  • 基金项目:
    国家自然科学基金(61601069);重庆市基础科学与前沿技术研究项目(cstc2017jcyjAX0254);重庆市教委科学技术研究项目(KJ1600935)。

Analysis and Modeling on Propagation Characteristics of Wireless Channel in Semi-closed Corridors

WANG Jingjing1, LIU Wei1, XIA Yu1, LUO Rong2, HU Shunren1   

  1. 1. School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China;
    2. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
  • Received:2018-03-20 Revised:2018-05-23 Online:2019-07-15 Published:2019-07-23

摘要: 针对半封闭环境下无线信道模型缺失的现状,以半封闭走廊为研究对象,对2.4 GHz无线信号的接收信号强度进行测量和分析。利用线性回归分析建立单斜率和双斜率对数距离接收功率模型,拟合得到相应的模型参数。通过与参考模型进行对比,分析半封闭结构对无线信号传播的影响。结果表明,对数距离接收功率模型适用于半封闭走廊环境,且双斜率模型的拟合效果优于单斜率模型。与常用的理论模型和近似场景的经验模型相比,提出模型能更真实地反映目标环境的实际传播特性。

关键词: 半封闭走廊, 无线信道, 传播特性, 对数距离模型, 接收信号强度

Abstract: To address the current situation of lack of wireless channel models for semi-closed environments,the semi-closed corridor is taken as the research object and received signal strength of 2.4 GHz wireless signals are measured and analyzed.Single-slope and double-slope logarithmic distance received power models are built by using linear regression analysis,and corresponding model parameters are obtained by fitting.By comparing with reference models,the influence of semi-closed structure on wireless signal propagation is analyzed.The results show that logarithmic distance received power model is suitable for semi-closed corridor environment,and the double-slope model is better than the single-slope model in fitting.Compared with frequently-used theoretical models and empirical models of approximate scenes,the proposed model can describe actual propagation characteristics of the target environment more realistically.

Key words: semi-closed corridor, wireless channel, propagation characteristic, log-distance model, received signal strength

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