| 天气影响下Ka频段移动卫星通信系统的性能 |
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| 引用本文： | 陈妍妍,刘发林. 天气影响下Ka频段移动卫星通信系统的性能[J]. 无线通信技术, 2005, 14(2): 18-21,27 |
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| 作者姓名： | 陈妍妍 刘发林 |
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| 作者单位： | 中国科学技术大学,电子工程与信息科学系,合肥,230027 |
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| 基金项目： | 教育部优秀青年教师资助计划(编号1922)，国家自然科学基金(60496314)资助。 |
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| 摘 要： | 本文建立了ka频段移动卫星通信系统模型,并利用计算机进行仿真给出了不同天气时信号的误码率,为实际的系统设计提供了理论基础。在本文中信道模型建立为雨衰和多径阴影衰落信道。在该模型中,雨衰信道服从高斯分布,阴影衰落信道服从Nakagami-Rayleigh分布。与现在广泛应用的Loo模型相比,此阴影模型能够更好地利用计算机进行仿真,并能提供较清晰的数学表达式,对陆地移动卫星系统进行定性定量的性能预测。
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| 关 键 词： | Ka频段 陆地移动卫星信道模型 误码率性能 |
| 文章编号： | 1003-8329(2005)02-0018-04 |
| 修稿时间： | 2005-01-20 |
The Performance of Ka-band Mobile Satellite Channels Incorporated Weather Impairments |
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| CHEN Yan-yan,LIU Fa-lin. The Performance of Ka-band Mobile Satellite Channels Incorporated Weather Impairments[J]. Wireless Communication Technology, 2005, 14(2): 18-21,27 |
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| Authors: | CHEN Yan-yan LIU Fa-lin |
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| Abstract: | In this paper, we set up the model of ka-band mobile satellite communication system , and simulate the BER performance , and apply academic basis for system design. We model the satellite channel as rain-fading and multi-path shadowing fading. In the model, the rain-fading is characterized by gauss distribution, the multi-path fading is characterized by the Nakagami-Rayleigh distribution. Compared of the above model with the Loo's model, the model is more convenient for simulated using computer, and can provides closed-form mathematically-tractable expression for the fundamental channel statistics, and very convenient for analytical and numerical performance prediction of land mobile satellite systems with different types of uncoded/coded modulations. |
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| Keywords: | Ka-band LMS model performance of BER |
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