| 数字电视广播系统中OFDM信道估计的几种算法及分析 |
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| 引用本文： | 魏炜.数字电视广播系统中OFDM信道估计的几种算法及分析[J].中国有线电视,2007(16):1474-1476. |
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| 作者姓名： | 魏炜 |
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| 作者单位： | 福州市广播电视信息网络中心,福建,福州,350001 |
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| 摘 要： | 正交频分复用技术以其频带利用率高、可有效抵抗多径干扰和窄带干扰等优点,被高清晰度数字电视广播系统采用为标准调制技术。为了保证传输信号的最优化,信道估计是OFDM系统必需的部分。介绍数字电视广播系统中OFDM信道估计几种算法的优缺点。
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| 关 键 词： | 正交频分复用 信道估计算法 信道的稀疏性 |
| 文章编号： | 1007-7022（2007）16-1474-02 |
| 收稿时间： | 2007-05-24 |
| 修稿时间： | 2007年5月24日 |
Analysis and Several Algorithms of Estimating the OFDM Channel in Digital Television Broadcast System |
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| WEI Wei.Analysis and Several Algorithms of Estimating the OFDM Channel in Digital Television Broadcast System[J].China Cable Television,2007(16):1474-1476. |
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| Authors: | WEI Wei |
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| Abstract: | Because of the high frequency utilization ratio,effective resistance of multipath interference and narrowband interference etc.,the Orthogonal Frequency Division Multiplexing technology is adopted as the standard modulating technology by the high-definition digital television system.In order to pursuit the optimal signal transmission,channel estimating must be conducted in OFDM system.This paper introduces the advantages and disadvantages of several algorithms of channel estimating in OFDM system. |
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| Keywords: | Orthogonal Frequency Division Multiplexing channel estimate algorithm channel sparseness |
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