非相关瑞利衰落信道的改进模型  

Improved Model for Independent Rayleigh Fading Channels

作　　者：朱秋明[1] 徐大专[1] 陈小敏[1] 

机构地区：[1]南京航空航天大学信息科学与技术学院,南京210016

出　　处：《南京航空航天大学学报》2009年第4期536-539,共4页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：江苏省自然科学基金(BK2007192)资助项目;南京航空航天大学引进人才科研启动基金(S0855-041)资助项目

摘　　要：证明了基于谐波信号叠加(SoS)的瑞利衰落信道模型中信号到达角的选择条件,并提出一种基于最佳到达角的非相关瑞利衰落信道模型。该模型将到达角分为随机和固定取值两部分,不但保证了相位的随机均匀分布,而且满足到达角的选择条件。理论分析和仿真结果表明:基于该模型的单径瑞利衰落信道各项统计特性与现有模型基本一致,但是多径信道之间以及每次产生的信道之间的相关性较小。Sum-of-sinusoids （SOS） models are widely used for simulating Rayleigh fading channels. Firstly, the requirements of optimal signal angle of arrival（AoA） for SoS models are proved. Then, an improved SoS model based on the optimal AoA is proposed. The AoA model is divided into deterministic part and random part. The phase uniform distribution is obtained and the proved requirements of AoA are met. Analysis and simulation results show that the single channel statistics of the new model is same as other models, but the independence among multiple channels and different simulation time channels is better.

关 键 词：信道模型 瑞利衰落 SoS模型 到达角 

分 类 号：TN911[电子电信—通信与信息系统]