| 一种改进的正交多载波同步DS/CDMA |
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| 引用本文： | 陈朝阳.一种改进的正交多载波同步DS/CDMA[J].解放军理工大学学报,2003,4(4):12-15. |
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| 作者姓名： | 陈朝阳 |
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| 作者单位： | 集美大学信息工程学院 福建厦门361021 |
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| 基金项目： | 教育部重点科技基金资助项目 ( 0 2 0 76)，福建省青年科技人才创新基金资助项目 ( 2 0 0 1J0 0 6) |
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| 摘 要： | 提出了一种改进的正交多载波同步DS／CDMA系统。该检测器占用频谱与单载波的频谱相同，满足CDMA系统频谱利用率高的特点。利用降低码片速率有效降低每路信号占有的带宽，将每路信息的比特分配在不同的调制载波上，减少了各路信号间的多址干扰。分析了系统的工作原理和系统性能。该系统结构简单，计算复杂度低，工程实现容易，且具有较强的抗多址干扰和“远一近”干扰能力。
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| 关 键 词： | 码分多址 多址干扰 正交载波 多载波调制 |
| 文章编号： | 1009-3443(2003)04-0012-04 |
| 修稿时间： | 2003年1月20日 |
An Improved Orthogonal Synchronous Multi -carrier DS /CDMA |
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| CHEN Chao-yang.An Improved Orthogonal Synchronous Multi -carrier DS /CDMA[J].Journal of PLA University of Science and Technology(Natural Science Edition),2003,4(4):12-15. |
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| Authors: | CHEN Chao-yang |
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| Institution: | Institute of Information Engineering, Jimei University, Xiamen 361021, China |
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| Abstract: | An improved orthogonal synchronous multi-carrier DS/CDMA is proposed in this paper. Spectrum characteristic of improved multi-carrier DS/CDMA is the same as single-carrier detector, conforming with spectrum characteristic of CDMA. Frequency width is compressed by decreasing signature-code speed and using bit-signal modulates by different carrier so as to decrease multi-user interference. The principle of this system is analyzed and the performance of the system is displayed. This improved system has a simple structure and low complexity of calculation. It can be realized easily in engineering and preferably eliminates MAI and near-far resistance. |
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| Keywords: | code division multiple access multi-access inference orthogonal carrier multi-carrier modulation |
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