| RM陆地移动卫星信道模型 |
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| 引用本文： | 荣剑,申东娅,孙静. RM陆地移动卫星信道模型[J]. 云南大学学报(自然科学版), 2006, 28(6): 487-491 |
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| 作者姓名： | 荣剑 申东娅 孙静 |
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| 作者单位： | 云南大学,信息学院,云南,昆明,650091 |
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| 基金项目： | 国家自然科学基金资助项目(F010106)，云南省科技计划项目(2003GH09) |
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| 摘 要： | 提出一种部分阴影下的新的陆地移动卫星信道幂指数统计模型.根据环境的阴影程度,接收信号的幅度可以划分为多个状态.提出部分阴影下的衰落模型是非阴影和全阴影下的模型的新的线性组合.A定义为阴影因子,它反映环境的阴影程度,阴影程度加深,A值增大.接收信号的幅度(分贝)期望值与非阴影和全阴影下的幅度(分贝)的期望值成线性关系.调整因子A可以灵活地仿真接收信号的幅度.仿真结果证明模型是正确的.
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| 关 键 词： | 信道衰落模型 陆地移动卫星 莱斯分布 瑞利-对数正态分布 RM组合 |
| 文章编号： | 0258-7971(2006)06-0487-05 |
| 修稿时间： | 2006-03-09 |
RM channel model for land mobile satellite |
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| RONG Jian,SHEN Dong-ya,SUN Jing. RM channel model for land mobile satellite[J]. Journal of Yunnan University(Natural Sciences), 2006, 28(6): 487-491 |
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| Authors: | RONG Jian SHEN Dong-ya SUN Jing |
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| Affiliation: | School of Information and Science Engineering, Yunnan University, Kunming 650091, China |
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| Abstract: | A new R~M statistical model in the partial shadowed for the land mobile satellite channel is proposed.The received amplitudes were classified into several states according to the degree of shadowed experimented.Partial fading model of received signal proposed is a new combination between the total shadowed and non-shadowed based on the factor A is related to shadowed and other environmental factors.The relationship among the expectations(in dB) of received signals,non-shadowed and total shadowed is linear relation and the expectation of received signals(in dB) is in direct proportion to A.Tuning the factor A is flexible to simulate the received signals.Comparison demonstrates the fading model is valid. |
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| Keywords: | channel fading model land mobile satellite rician distribution rayleigh-lognormal distribution R~M combination |
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