| 地面数字电视广播的信道估计算法 |
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| 引用本文： | 杨知行,王军,潘长勇,杨林.地面数字电视广播的信道估计算法[J].电子学报,2002,30(9):1298-1301. |
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| 作者姓名： | 杨知行 王军 潘长勇 杨林 |
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| 作者单位： | 清华大学数字电视传输技术研发中心,北京,100084 |
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| 摘 要： | 本文在简介地面数字电视广播（Digital Television Terrestrial Broadcasting，DTTB）的发展及其信道特点的基础上，描述了国外现有DTTB传输标准和清华大学数字电视传输技术研发中心提出的DMB-T（Terrestrial Digital Multimedia Television Broadcasting)所采用的信道估计算法，并对以上信道估计性能进行比较，证明DMB-T信道估计算法受高期噪声和时变信道估计的影响更小，而且算法实现更简单。
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| 关 键 词： | 地面数字电视广播 地面数字多媒体广播 正交频分复用 DTTB DMB－T 信道估计 PN码 |
| 文章编号： | 0372-2112(2002)09-1298-04 |
Channel Estimation Methods of Digital Television Terrestrial Broadcasting |
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| YANG Zhi-xing,WANG Jun,PAN Chang-yong,LIN Yang.Channel Estimation Methods of Digital Television Terrestrial Broadcasting[J].Acta Electronica Sinica,2002,30(9):1298-1301. |
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| Authors: | YANG Zhi-xing WANG Jun PAN Chang-yong LIN Yang |
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| Abstract: | The development of the Digital Television Terrestrial Broadcasting (DTTB) and channel characters of the DTTB are first described in this paper,and the channel estimation method for the DMB-T (Terrestrial Digital Multimedia/Television Broadcasting) standard innovated by Digital TV R&D Center of Tsinghua University is then discussed in details. Comparing with other existing international standards of DTTB, we conclude that the channel estimation for DMB-T has advantages of low computational complexity and significant suppression of channel noise. |
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| Keywords: | DTTB DTTB-T OFDM channel estimation PN code |
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