| 一种提高TDD系统在快衰落信道中性能的新型时隙结构 |
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| 引用本文： | 雷鸣,徐月善,刘宝玲,张平.一种提高TDD系统在快衰落信道中性能的新型时隙结构[J].北京邮电大学学报,2003,26(4):94-98. |
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| 作者姓名： | 雷鸣 徐月善 刘宝玲 张平 |
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| 作者单位： | 北京邮电大学 电信工程学院 , 北京 100876 |
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| 基金项目： | 国家高技术研究发展计划(863计划);2001AA123016; |
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| 摘 要： | 针对TDD(time division duplex)系统提出了一种新型的时隙结构 ,该时隙由前置导频、数据、后置导频和保护时间4个部分构成. 基于这种时隙结构,信道估计的高阶插值可以在一个TDD时隙内完成,从而克服了基于插值的信道估计方法在TDD系统中实现困难的问题. 基于新型时隙结构的TDD系统可以采用高阶插值来克服信道快衰落,从而获得性能的改善.
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| 关 键 词： | 时分双工 快衰落 时隙结构 高阶插值 信道估计 |
| 文章编号： | 1007-5321(2003)04-0094-05 |
| 修稿时间： | 2002年11月8日 |
A Novel Time Slot for Combating Fast Fading in TDD Systems |
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| LEI Ming,XU Yue-shan,LIU Bao-ling,ZHANG Ping.A Novel Time Slot for Combating Fast Fading in TDD Systems[J].Journal of Beijing University of Posts and Telecommunications,2003,26(4):94-98. |
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| Authors: | LEI Ming XU Yue-shan LIU Bao-ling ZHANG Ping |
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| Affiliation: | Telecommunication Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | In this paper, we put forward a novel time slot structure, which is made up of four parts: pre-pilot, data, post-pilot and guard time. Based on this novel time slot structure, the interpolation of channel estimation can be achieved within every TDD time slot. The simulation results show that BER performance can be improved significantly when the system experiences fast fading. |
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| Keywords: | TDD fast fading time slot structure high-order interpolation channel estimation |
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