伪波束法研究超宽带室内信道的功率分布  

Power Distribution of UWB Indoor Channel by Using Pseudobeams Methods

作　　者：扈罗全[1] 姬国庆[1] 朱洪波[1] 

机构地区：[1]南京邮电大学无线通信与电磁兼容实验室,南京210003

出　　处：《微波学报》2006年第3期62-65,70,共5页Journal of Microwaves

基　　金：国家自然科学基金重点项目(No.60432040);教育部博士点基金项目(No.200509230031)

摘　　要：针对超宽带(UWB)信号的传输特点,以及超宽带信道与窄带信道间的区别,基于传播环境的几何描述,使用伪波束法建立了UWB多径信道有约束的布朗桥模型(BBBM)。根据UWB室内多径信道接收功率的遍历性假设,利用得到的多径信道模型计算室内UWB通信系统的功率分布。对三个典型环境下不同路径的UWB室内信号功率分布进行了仿真分析,计算结果与理论分析一致,表明基于伪波束法的UWB室内信道BBBM模型是正确的,使用BBBM模型可以分析UWB通信系统在室内环境的功率覆盖。According to the propagation properties of UWB signals, and the difference between UWB channel and narrow band channel, bounded Brownian bridge model （BBBM） for UWB mulfipath channel was constructed by using pseudobeams methods （PB） from the environment-based geometrical description. Based on the ergodicity assumption for received power in UWB indoor channel, signals power distributions in three different environments were simulated. The results of simulation corresponded well with the ones of theoretical analysis, which demonstrated that the BBBM constructed from pseudobeams methods was correct, and could be used for UWB communications systems to analyze the power coverage in indoor environment.

关 键 词：超宽带 多径信道 功率覆盖 伪波束法 

分 类 号：TN925[电子电信—通信与信息系统]