摘要
室内无线局域网的覆盖率是影响用户网络通信效率的关键因素。若室内面积越大以及墙体过厚,且终端使用环境密封会导致通过折射等途径传输通信信号非常微弱,严重影响无线局域网的通信覆盖范围。为此,提出模态分解下的无线局域网室内全覆盖通信方法。通过划分局域网模态单元和确定室内信号振幅阈值,构建模态振幅阈值模型,消除无线局域网室内信号滤波噪声。从终端无线访问节点(AccessPoint,AP)的信号容量和天线传播损耗两方面分析影响无线局域网通信覆盖范围的原因。基于此,利用非朗伯发射器扩充无线局域网终端AP的信号容量,实现无线局域网的室内全覆盖通信。实验结果表明,研究方法应用下无线局域网的室内通信的盲点面积小,覆盖效率更高,实验场景室内通信信息传输率约为6.8Mbit·s^(-1),说明上述方法的可应用性更强。
The coverage rate of indoor WLAN is a key factor affecting the efficiency of user network communica-tion.If the indoor area is too large and the wall is too thick,the communication coverage of WLAN will be seriously affected.For this reason,a method of indoor full coverage communication of WLAN based on modal decomposition was proposed.After dividing the LAN modal units and determining the indoor signal amplitude threshold,a modal ampli-tude threshold model was constructed to eliminate the indoor signal filtering noise of WLAN.Then,the reason affecting the WLAN communication coverage was analyzed from the aspects of the signal capacity of AP(Access Point)and the antenna propagation loss.On this basis,a non-Lambertian transmitter was used to expand the signal capacity of terminal AP in WLAN,thus achieving indoor full coverage communication in WLAN.Experimental results show that the proposed method has smaller blind spot area of WLAN indoor communication and higher coverage effi-ciency.And the indoor communication information transmission rate in the experimental scene is about 6.8Mbit·s^(-1),indicating that the method is more applicable.
作者
刘凯
郝靖伟
高平
LIU Kai;Hao Jing-wei;GAO Ping(Network Information Center,Ningxia Medical University,Ningxia Yinchuan 750004,China;School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China)
出处
《计算机仿真》
2024年第2期430-434,共5页
Computer Simulation
基金
宁夏自然科学基金项目(2021AAC03114)。
关键词
模态分解
无线局域网
室内覆盖
非朗伯发射器
Modal decomposition
Wireless local area network
Indoor coverage
Non-Lambertian transmitter
