宽带频率选择性卫星移动信道仿真模型

张嘉铭, 杨明川, 郭庆

哈尔滨工业大学通信技术研究所



摘要:

针对国内外对宽带卫星移动信道特性的研究中,缺少实测数据验证可用于系统关键技术的信道仿真模型这一问题,在从频域和时域两方面对宽带卫星移动信道频率选择性衰落的成因进行深入分析的基础上,基于多点散射理论建立了宽带频率选择性卫星移动信道的仿真模型,并通过典型环境下实测数据的统计特性进行验证.仿真结果表明建立的信道仿真模型能够准确地模拟真实传输环境下的宽带频率选择性卫星移动信道的衰落特性.

关键词:  卫星移动信道  衰落特性  频率选择性  传播散射理论

DOI：10.11918/j.issn.0367-6234.2011.07.010

分类号:TN927.23

基金项目:国家自然科学基金资助项目(60532030)



Wideband frequency selective satellite mobile channel simulation model

ZHANG Jia-ming, YANG Ming-chuan, GUO Qing

Communication Research Center,Harbin Institute of Technology,150001 Harbin,China

Abstract:

Without enough measured data of channel statistics,studies on broadband satellite mobile channel modeling are still in the phase of exploring both at home and abroad.This paper analyzed the reasons of selective fading along broadband satellite mobile channel in time domain and frequency domain,and created a phase variable simulation model of wideband satellite mobile channel according to the multiple-point scattering theory.Verified with the statistics of the measured data from German Aerospace Center(DLR),under three kinds of typical environments,the model is proved to simulate the real transmission environment well.

Key words:  satellite mobile channel  fading characteristic  frequency selective  multiple-point scattering theory