第三代移动通信信道模型仿真分析  

Simulation and Analysis of Channel Model in 3G Mobile Communications

作　　者：梁超[1] 项铁铭[1] 刘超[2] 官伯然[1] 

机构地区：[1]杭州电子科技大学天线与微波技术研究所,浙江杭州310018 [2]杭州电子科技大学通信工程学院,浙江杭州310018

出　　处：《计算机仿真》2009年第9期100-104,共5页Computer Simulation

摘　　要：针对信道性能的好坏直接决定着人们通信的质量,为了更好地评估无线信道的性能,首先为第三代移动通信信道模型建立了仿真平台;针对频率选择性多径衰落的仿真方法运算量大的问题,在一种新的移动信道模型的基础上采用了抽样延迟的仿真方法,运算量小且容易实现,并根据IMT-2000标准所提供的参数,分别得到了室内移动、室外步行以及车辆移动三种条件下的信号包络,仿真结果表明方法能很好的仿真频率选择性衰落信道,从而使得对于3G无线信道性能的评估更加方便。The channel performance directly determines the quality of communications, so in order to evaluate the channel performance more efficiently, firstly, a simulation platform is established for channel models in 3G mobile communications. Secondly, owing to the complexity of the general simulation method used for frequency - selective multiple - path fading, this paper utilizes a new mobile channel model and presents a new method called Sample Delay, which is simpler and can be more easily realized. And through using the parameters supplied by IMT -2000 standard, the signal envelope can be acquired in three test environments--indoor, outdoor and vehicular. The simulation results show that this method could simulate frequency - selective fading channel efficiently, so 3G wireless channel performance can be evaluated more conveniently.

关 键 词：信道模型 路径损耗 多径衰落 

分 类 号：TN929.5[电子电信—通信与信息系统]