| 基于稀疏多径信道的均衡技术分析 |
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| 引用本文： | 孙腾,宋志群,张永杰.基于稀疏多径信道的均衡技术分析[J].无线电工程,2011,41(12):5-7,11. |
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| 作者姓名： | 孙腾 宋志群 张永杰 |
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| 作者单位： | 中国电子科技集团公司第五十四研究所,河北石家庄,050081 |
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| 摘 要： | 为了解决宽带通信稀疏多径信道下均衡器结构复杂和收敛速度慢的问题,介绍了稀疏多径信道和基于伪随机序列的多径搜索。针对稀疏多径信道的特点,对判决反馈均衡器进行改进,提出了一种基于正交匹配追踪信道估计的完全判决反馈均衡器。利用正交匹配追踪估计结果在前馈均衡器前消除已判决码元对当前判决码元的码间串扰,降低了均衡器的复杂度,提高了收敛速度。通过仿真分析表明完全判决反馈均衡器能取得良好的性能。
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| 关 键 词： | 稀疏多径 多径搜索 完全判决反馈均衡器 正交匹配追踪估计 |
Analysis on Equalization Based on Sparse Multipath Channel |
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| SUN Teng,SONG Zhi-qun,ZHANG Yong-jie.Analysis on Equalization Based on Sparse Multipath Channel[J].Radio Engineering of China,2011,41(12):5-7,11. |
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| Authors: | SUN Teng SONG Zhi-qun ZHANG Yong-jie |
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| Affiliation: | SUN Teng,SONG Zhi-qun,ZHANG Yong-jie(The 54th Research Institute of CETC,Shijiazhuang Hebei 050081,China) |
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| Abstract: | In order to solve the problem that the structure is too complexity and the convergent time is too long under sparse multipath channel in wideband communication,this paper introduces the sparse multipath channel and multipath searching technique based on PN sequence.Exploiting the sparseness of the channel,the decision feedback equalizer is improved.Based on that,the paper proposes the complete feedback equalizer using orthogonal matching pursuit channel estimate.The postcursor ISI is eliminated before the f... |
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| Keywords: | sparse multipath multipath search complete feedback equalizer orthogonal matching pursuit channel estimate |
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