有效的Ka波段移动卫星信道综合模型研究

doi:10.3969/j.issn.1000-436x.2012.z2.023

通信学报 ›› 2012, Vol. 33 ›› Issue (Z2): 172-175.doi: 10.3969/j.issn.1000-436x.2012.z2.023

有效的Ka波段移动卫星信道综合模型研究

韦娟,刘达,田刚旗

西安电子科技大学通信工程学院，陕西西安 710071

出版日期:2012-11-25 发布日期:2017-08-03
基金资助:
国家自然科学基金资助项目;高等学校学科创新引智计划(“111”计划)基金资助项目;国家留学基金委访问学者出国研修项目;中央高校基本科研业务费资金资助

Study on an effective integrated model of Ka-band mobile satellite channel

Juan WEI,Da LIU,Gang-qi TIAN

School of Telecommunications Engineering,Xidian University,Xi’an 710071,China

Online:2012-11-25 Published:2017-08-03
Supported by:
The National Natural Science Foundation of China;111 Project(B08038);China Scholarship Council Project;The Fundamental Research Funds for the Central Universities

摘要/Abstract

摘要：

为了更加准确地描述卫星移动通信信道的衰落特性，提出了一种新的Ka波段卫星移动通信信道综合模型。首先在分析移动卫星信道传播特性的基础上，考虑多径衰落、阴影遮蔽及天气影响等因素，建立了服从Gaussian分布的大气空间模型，推导出服从Rice、Rayleigh和Lognormal联合分布的地面信道模型。然后利用卫星信道环境中大气空间部分与地面部分对信道特性的影响是彼此相互独立的性质，提出了一种在大气空间持续影响下的移动卫星信道衰落特性综合模型。并就不同天气条件和不同阴影遮蔽程度下，综合模型的误码率特征与系统误码率理论上限进行仿真对比，得出了相一致的结果，验证了该信道综合模型的合理性和正确性。

关键词: Ka波段, 卫星信道, 概率分布, 天气影响, 综合模型

Abstract:

In order to describe the Ka-band mobile satellite communications channel fading features more realitically,a mobile satellite integrated channel model was proposed.The characteristics of the mobile satellite propogation channel were analysed in detail.Weather conditions,as well as multi-path fading and shadowing were taken into account as main influencing factors.On this basis,airspace channel model was built obeying the Gaussian distribution as well ground surface,which obey Rice,Rayleigh and Lognormal joint distribution.Then the integrated channel model was presented considering weather effects on condition that the two parts are independent each other in the influence of the channel characteristics.The mathematical analysis model and simulation model of the new integrated channel model were established respectively.Finally,the BER(bit error rate)performance was analyzed for different weather conditions and shadows.Compared with the theoretical BER,the integrated channel model in satellite mobile communication systems is correct and reasonable.

Key words: Ka-band, satellite channel, probability distribution, weather effect, integrated model

韦娟,刘达,田刚旗. 有效的Ka波段移动卫星信道综合模型研究[J]. 通信学报, 2012, 33(Z2): 172-175.

Juan WEI,Da LIU,Gang-qi TIAN. Study on an effective integrated model of Ka-band mobile satellite channel[J]. Journal on Communications, 2012, 33(Z2): 172-175.

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参考文献 8

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[5]	PRIETO-CERDEIRA R , PEREZ-FONTAN F , BURZIGOTTI P ,et al. Versatile two-state land mobile satellite channel model with first application to DVB-SH analysis[J].International Journal of Satellite Communications and Networking,2010.291-315. International Journal of Satellite Communications and Networking, 2010, 291-315.
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有效的Ka波段移动卫星信道综合模型研究

Study on an effective integrated model of Ka-band mobile satellite channel

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