| 干扰抵消型多用户检测器的改进方法 |
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| 引用本文： | 李林贾鹏,鲜继清. 干扰抵消型多用户检测器的改进方法[J]. 重庆邮电学院学报(自然科学版), 2006, 18(6): 699-703 |
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| 作者姓名： | 李林贾鹏 鲜继清 |
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| 作者单位： | 重庆邮电大学自动化学院,重庆400065 |
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| 基金项目： | 国家“863”项目资助（2003AA412030） |
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| 摘 要： | 提出了干扰抵消型多用户检测器的改进方法,即根据功率大小将用户分组,组内用户并行处理,组间串行处理。详细说明了检测器结构,分析了误码率,给出了计算表达式。仿真结果证明：无论在同步系统还是异步系统,这种结构在抗远近效应、系统容量等方面的性能都相似于或优于多级串行抵消器,而处理时间却比后者大大降低;同时比并行抵消器显示出极大的优势。
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| 关 键 词： | 码分多址 干扰抵消 多址干扰 远近效应 时延 |
| 文章编号： | 1004-5694（2006）06-0699-05 |
| 收稿时间： | 2005-09-07 |
| 修稿时间： | 2006-06-27 |
Improved method of interference cancellation |
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| LI Lin,JIA Peng,XIAN Ji-qing. Improved method of interference cancellation[J]. Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition), 2006, 18(6): 699-703 |
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| Authors: | LI Lin JIA Peng XIAN Ji-qing |
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| Affiliation: | College of Automation ,Chongqing University of Posts and Telecommunications ,Chongqing 400065, P.R. China |
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| Abstract: | An improved method of interference cancellation is proposed. In this model, users are divided into groups according to their power. The process in the same group is parallel and that in different groups is successive. The model structure is presented and the expression of bit error rate is derived analytically. The simulation proved that no matter in synchronous system or asynchronous system, the performance of this model is similar with or better than multi-stage successive interference cancellation in near-far resistance and system capacity, etc. But the process time is much shorter than the latter; at the same time, this model also outperform parallel interference cancellation. |
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| Keywords: | CDMA interference cancellation multiple address interference near far effects delay |
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