| 移动通信中宽带接收系统信号电平特性的研究 |
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| 引用本文： | 刘晓云,郑岚.移动通信中宽带接收系统信号电平特性的研究[J].长春理工大学学报,2006,29(2):48-52,75. |
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| 作者姓名： | 刘晓云 郑岚 |
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| 作者单位： | 南京邮电大学 南京210003 |
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| 摘 要： | 首先建立了一个包括直达波和非直达波的无线电波的传播模型,然后得到宽带接收系统中接收信号的电平表达式,再通过MATLAB仿真得到宽带接收系统中信号的电平变化和分布的特性。根据仿真结果,可知宽带接收系统的信号电平变化约为10dB,信号电平的分布受到传播模式中的接收带宽、达波数、路径差的影响。
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| 关 键 词： | 多径衰落 视距 衰落深度 信号电平 |
| 文章编号： | 1672-9870（2006）02-0048-05 |
| 收稿时间： | 2006-03-05 |
| 修稿时间： | 2006年3月5日 |
Study on Received Signal-level Characteristics in Wideband Transmissions in Mobile Communications |
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| LIU Xiaoyun,ZHANG Lan.Study on Received Signal-level Characteristics in Wideband Transmissions in Mobile Communications[J].Journal of Changchun University of Science and Technology,2006,29(2):48-52,75. |
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| Authors: | LIU Xiaoyun ZHANG Lan |
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| Abstract: | In this paper a mobile propagation model that includes not only indirect arriving waves but also direct arriving waves is proposed.On the basis of the model,we derived a mathematical expression for the signal level.Then we used MATLAB to simulate different characteristics between wide-band and narrow-band received systems.For a received signal-level variation in wide-band transmission is about 10 dB and is influenced by received bandwidth,arrived wave number and path length difference. |
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| Keywords: | Multi-path fading Line-of-sight Fading depth Signal level |
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