一种新的无线电波传播路径损耗模型  

Novel Path Loss Model for Propagation of Radio Waves

作　　者：扈罗全[1] CHEN Yifan 陆全荣[1] 

机构地区：[1]苏州出入境检验检疫局,江苏苏州215128 [2]格林威治大学工程学院,英国伦敦 SE10 9LS

出　　处：《中国电子科学研究院学报》2008年第1期40-43,47,共5页Journal of China Academy of Electronics and Information Technology

基　　金：教育部博士点基金项目(200509230031);国家质检总局科研项目(2006KJ11);江苏出入境检验检疫局科研项目(2007KJ13)

摘　　要：使用渗流网格建模无线电波的随机传播环境,在此基础上使用随机射线方法,从概率论的角度得到若干路径损耗的解析公式。经过与经典路径损耗模型以及其他由非波动方法得到的路径损耗模型的比较之后,从逻辑上推断出一个新的路径损耗模型。对新模型中参数的取值范围进行了讨论和分析,最后使用城市密集传播地区的测量数据验证新的路径损耗模型的精确性。Percolation lattices are used to model random propagation environment of radio waves based on which stochastic ray method is utilized to analyze path loss from the perspective of probabilistic theory, and several closed-form expressions are derived. After the comparison with the classical results and the ones derived from other no-wave approaches, we propose a novel path loss model from logical deduction. The determination of model parameters is investigated and we validate this model by using the experimental data under typical dense urban propagation environment.

关 键 词：无线通信 随机过程 路径损耗 随机射线 信道模型 

分 类 号：TN929.5[电子电信—通信与信息系统]