| DMBT系统中利用FWT快速实现信道估计 |
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| 引用本文： | 虞斐,蒋朱成,史峥,冯晨晖.DMBT系统中利用FWT快速实现信道估计[J].电路与系统学报,2009,14(6). |
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| 作者姓名： | 虞斐 蒋朱成 史峥 冯晨晖 |
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| 作者单位： | 1. 浙江大学VLSI设计研究所,浙江,杭州,310027
2. 上海卓胜微电子,上海,201203 |
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| 摘 要： | 根据PN码的结构特性,针对DMB-T系统多载波模式,本文提出了一种新的理论上与滑窗相关法等价的信道估计方法,利用FWT(快速沃尔什变换)实现快速多径捕获.通过干扰抵消进一步消除了径间干扰.该方法具有很强的抗多径效应和抗强窄带干扰的能力,将运算复杂度从传统滑动互相关法的N~2降低到(N+1)log_2(N+1).
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| 关 键 词： | 信道估计 快速沃尔什变换 PN序列 DMB-T系统 |
Fast channel estimation using FWT in DMB-T systems |
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| YU Fei,JIANG Zhu-cheng,SHI Zheng,FENG Chen-hui.Fast channel estimation using FWT in DMB-T systems[J].Journal of Circuits and Systems,2009,14(6). |
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| Authors: | YU Fei JIANG Zhu-cheng SHI Zheng FENG Chen-hui |
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| Institution: | YU Fei1,JIANG Zhu-cheng2,SHI Zheng1,FENG Chen-hui2 ( 1. Institute of VLSI Design,Zhejiang University,Hangzhou 310027,China,2. Maxscend Technologies Co. Ltd,Shanghai 201203,China ) |
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| Abstract: | Based on the characteristics of pseudo-random code sequence,this paper proposes a new algorithm for channel estimation in DMB-T systems using FWT(Fast Walsh Transform) ,which is equivalent to sliding window method theoretically on performance. Interference cancellation is also implemented to further reduce the interference between different paths. This new algorithm is highly resistant to multi-path effects and narrow-band interference,and reduces the computational complexity from N 2of traditional method t... |
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| Keywords: | channel estimation FWT PN sequence DMB-T systems |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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