| 基于部分传输序列和选择映射的ICI消除方法 |
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| 引用本文： | 曾浩.基于部分传输序列和选择映射的ICI消除方法[J].电子工程师,2006,32(6):24-27. |
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| 作者姓名： | 曾浩 |
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| 作者单位： | 重庆邮电大学,重庆市,400065 |
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| 摘 要： | OFDM(正交频分复用)是第4代移动通信系统的核心技术之一,在OFDM基本系统中,各载波间正交性的损失会导致ICI(载波间干扰)的产生。文中在介绍和比较多种传统消除ICI的方法的基础上,提出了一种新的ICI消除技术:PTS(部分传输序列)法和SLM(选择映射)法,并针对PTS算法的缺陷提出了改进优化算法。仿真结果表明PTS和SLM算法都能减小系统的ICI,对系统误码率有所改善,从而使系统的性能得到了提高。
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| 关 键 词： | OFDM 载波间干扰 干扰载波比 部分序列传送法 |
| 收稿时间： | 2005-10-10 |
| 修稿时间： | 2005-12-13 |
A New Inter-carrier Interference Suppression Technology of OFDM Based on Part-sequence Transmission and Selective Mapping |
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| ZENG Hao.A New Inter-carrier Interference Suppression Technology of OFDM Based on Part-sequence Transmission and Selective Mapping[J].Electronic Engineer,2006,32(6):24-27. |
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| Authors: | ZENG Hao |
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| Institution: | Chongqing University, Chongqing 400065, China |
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| Abstract: | OFDM is one of core technologies of the fourth generation mobile communication system,and in its basic system,orthogonal loss among carries would lead to the production of Inter-carrier Interference(ICI).On the basis of introducing and comparing many traditional suppression methods of ICI,this paper suggests a new ICI suppression technology that is part-sequence transmission(PST) and selective mapping(SLM),and puts forward an improved optimization algorithm for PTS defect.The result of simulation shows both PTS and SLM arithmetic can reduce systematical ICI and improve systematical Bit Error Rate,resulting in the system performance improvement. |
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| Keywords: | OFDM ICI PICR PTS |
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