| MC-CDMA与传统CDMA中多用户检测性能的研究和比较 |
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| 引用本文： | 李艳萍,王磊,王华奎.MC-CDMA与传统CDMA中多用户检测性能的研究和比较[J].太原理工大学学报,2006,37(3):260-263. |
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| 作者姓名： | 李艳萍 王磊 王华奎 |
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| 作者单位： | 太原理工大学,信息与通信工程系,山西,太原,030024 |
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| 摘 要： | 研究了多载波码分多址(MC-CDMA)系统,用收敛性能良好的递归最小二乘(RLS)算法将MC-CDMA与传统CDMA中的信干比(SIR)和误码率(BER)等多用户检测性能进行了比较。动态仿真表明:多径信道中,MC-CDMA不仅具有较高的SIR,而且具有良好的跟踪性能,在信噪比为6 dB时,其系统误码率就达到了正常通话指标要求,而传统CDMA系统BER性能不佳。从而得出了MC-CDMA比传统CDMA更适合于低信噪比、高速率移动通信的结论。
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| 关 键 词： | 多用户检测(MUD) 多载波码分多址(MC-CDMA) 正交频分复用(OFDM) 符号间干扰(ISI) |
| 文章编号： | 1007-9432（2006）03-0260-04 |
| 收稿时间： | 2005-09-12 |
| 修稿时间： | 2005年9月12日 |
The Comparison of Multi-User Detection Performances between MC-CDMA and Traditional CDMA |
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| LI Yan-ping,WANG Lei,WANG Hua-kui.The Comparison of Multi-User Detection Performances between MC-CDMA and Traditional CDMA[J].Journal of Taiyuan University of Technology,2006,37(3):260-263. |
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| Authors: | LI Yan-ping WANG Lei WANG Hua-kui |
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| Institution: | College of Information Engineering of TUT , Taiyuan 030024,China |
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| Abstract: | This paper studied the structure of MC-CDMA,using the RLS algorithm which has good convergence character to compare Multi-user Detection Performances including SIR and BER between MC-CDMA and traditional CDMA.The dynamic simulations show: MC-CDMA has not only high SIR but also good tracking ability in multiple paths;when SNR is 6dB,the BER of MC-CDMA reached the standard of normal communication,while the BER of traditional CDMA is bad.Then we conclude that MC-CDMA is more suitable for low SNR and high data rate mobile communication than traditional CDMA. |
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| Keywords: | Multi-user Detection MC-CDMA Orthogonal Frequency Division Multiplexing inter-symbol interference |
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