半封闭走廊中无线信道传播特性分析与建模  

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

作　　者：王晶晶 刘伟 夏宇 罗嵘[2] 胡顺仁 WANG Jingjing;LIU Wei;XIA Yu;LUO Rong;HU Shunren(School of Electrical and Electronic Engineering,Chongqing University of Technology,Chongqing 400054,China;Department of Electronic Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[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

出　　处：《计算机工程》2019年第7期147-153,共7页Computer Engineering

基　　金：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)

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。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.

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 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]