| DS-CDMA系统正交码调制的抗多址干扰性能及其改进 |
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| 引用本文： | 阮永红,祁玉生.DS-CDMA系统正交码调制的抗多址干扰性能及其改进[J].通信学报,1999,20(8):86-90. |
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| 作者姓名： | 阮永红 祁玉生 |
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| 作者单位： | 南京邮电学院 |
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| 摘 要： | 本文推导非同步 Ｃ Ｄ Ｍ Ａ 系统多址干扰表达式，计算正交码调制码组相关性对多址干扰的影响。提出一种改进型 Ｗ ａｌｓｈ＋ Ｇ Ｍ Ｗ 正交码组，分析比较 Ｗ ａｌｓｈ 正交码组和 Ｗ ａｌｓｈ＋ Ｇ Ｍ Ｗ 正交码组应用于非同步 Ｃ Ｄ Ｍ Ａ 系统的性能。计算机模拟结果表明应用改进型正交码组时系统性能获得改善。
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| 关 键 词： | 非同步CDMA系统 多址干扰 正交码调制码组 改进型Walsh GMW正交码组 |
Anti-MAI Performance Analysis and Improvement of Orthogonal Code Modulation in DS-CDMA System |
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| Ruan Yonghong,Qi Yusheng.Anti-MAI Performance Analysis and Improvement of Orthogonal Code Modulation in DS-CDMA System[J].Journal on Communications,1999,20(8):86-90. |
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| Authors: | Ruan Yonghong Qi Yusheng |
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| Abstract: | The performance representation indicating the effects of correlation of orthogonal code modulation sequences on MAI suppression in nonsynchronous CDMA system has been derived.Furthermore,an improved orthogonal codes called Walsh GMW sequences is proposed in this paper.Analysis and comparison of the performance between nonsynchronous CDMA systems using Walsh and Walsh GMW orthogonal sequences are presented.Computer simulation results show that the system performance using Walsh GMW sequences is improved. |
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| Keywords: | nonsynchronous CDMA system multiaccess interference orthogonal code modulated sequences improved orthogonal Walsh GMW sequences |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
