| 多载波CDMA在Rician衰落信道的性能研究 |
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| 引用本文： | 王灿,李乐民.多载波CDMA在Rician衰落信道的性能研究[J].电子科技大学学报（自然科学版）,1998,27(2):118-122. |
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| 作者姓名： | 王灿 李乐民 |
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| 作者单位： | 1.电子科技大学抗干扰通信技术国防科技重点实验室 成都 610054 |
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| 摘 要： | 在一种同步OFDM-CDMA的系统模型基础上,对频率非选择性Rician衰落信道的误码率性能进行了研究,分析和数值结果说明由于多径的存在系统误码率性能迅速下降,而且当直射成分很小时,信道为Rayleig h信道,系统性能变为最差。
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| 关 键 词： | 码分多址 正交频分多址 正交频分复用-直接序列扩频-码分多址 Rician衰落信道 |
| 收稿时间： | 1997-08-25 |
Performance Analysis of Multi carrier CDMA in a Non Selective Rician Fading Channel |
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| Affiliation: | 1.National Communication Lab.,UEST of China Chengdu 610054 |
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| Abstract: | Orthogonal frequency division multiplexing (OFDM) is a general technique for data paralled transmission on multiple carriers.One principal advantage of OFDM is its utility for transmission at nearly optimum performance in unequalized channels and in multipath channesl.OFDM-CDMA is a new concept that applies the orthogonal multicarrier technique to direct sequence CDMA systems.A synchronous OFDM-CDMA model is presented in this paper,and the performance of this system in a non selective Rician fading channel is also evaluated.The numerical results show the system bit error probability degrades rapidly due to multipath component. |
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