| 3G移动通信复扰码技术的缺陷研究 |
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| 引用本文： | 傅海阳,张亚琪,金卓琳,凌灵.3G移动通信复扰码技术的缺陷研究[J].南京邮电大学学报(自然科学版),2006,26(6):1-5. |
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| 作者姓名： | 傅海阳 张亚琪 金卓琳 凌灵 |
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| 作者单位： | 南京邮电大学,通信与信息工程学院,江苏,南京,210003 |
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| 摘 要： | 3G移动通信系统应该以提供移动因特网业务为主，所以3G系统的下行容量是一个需要特别关注的问题。分析了3G复扰码的作用后发现它将引入QAMI和Q两个子信道间的准正交地址码干扰，会导致系统容量的下降。考虑到频谱资源的价值，给出了两个改进的扰码方案。它们既可以起到复扰码的作用，也能大幅提升系统容量。
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| 关 键 词： | 复扰码 同步 准正交地址码 小区容量 |
| 文章编号： | 1673-5439（2006）06-0001-05 |
| 收稿时间： | 2006-01-18 |
| 修稿时间： | 2006年1月18日 |
The Research for Disadvantage of Complex-Scrambled Code Technique in 3G Mobile Communication |
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| FU Hai-yang,ZHANG Ya-qi,JIN Zhou-lin,LING Ling.The Research for Disadvantage of Complex-Scrambled Code Technique in 3G Mobile Communication[J].Journal of Nanjing University of Posts and Telecommunications,2006,26(6):1-5. |
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| Authors: | FU Hai-yang ZHANG Ya-qi JIN Zhou-lin LING Ling |
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| Institution: | College of Communication and Information Engineering, Nanjing University of posts and Telecommunication, Nanjing 210003, China |
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| Abstract: | The main purpose of 3G mobile communication system is to support wireless Internet service. We pay great attention to the cell capacity of 3G mobile system, especially on downlink. In this paper, we find 3G complex-scrambled code will produce quasi-orthogonal address code between I and Q channels in QAM, which can cause interference and result in the decline of system capacity during analyzing the function of complex-scrambled code. Considering the value of bandwidth resource, this paper gives two improved scrambled code ways which can both take the role of complex-scrambled code and increase the system capacity rapidly. |
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| Keywords: | QAM |
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