摘要
在室内无线传播环境的研究中,通道式结构是一种常见的室内结构,如酒店过道、开放式办公室过道、地停车场行车通道等。可选择4种具有此类型结构的室内传播环境进行研究,对每个通道式室内结构的环境均采用了空闲状态下的离散距离采样测试法得到信号强度,然后利用最小均方误差法拟合了这种结构下无线信号的视距路径损耗指数,得到其平均值,为研究室内无线信道的特性提供了参考。
In the field of wireless transmission, the indoor street is a type of structure in buildings, such as hallway in the hotel, walkway in the opening oifice or the passageway in underground parking and so on. The paper studies 4 kinds of indoor structure. The values of signal strength from receiver are obtained by measuring scatter spot in every indoor street and the mean value of path loss exponent in the structure in indoor street under the light of sight （LOS） is obtained by using the method of Minimum Mean Square Error （MMSE）. The value will provide the important reference in the research field of wireless channel.
出处
《无线电通信技术》
2009年第2期31-33,共3页
Radio Communications Technology
关键词
无线信号
室内通道
路径损耗指数
高斯随机变量
wireless signaling
indoor street
path loss exponent
Gaussian random variable
