| 双导频载波恢复算法设计 |
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| 引用本文： | 董佩,陈伟,龙必起.双导频载波恢复算法设计[J].电视技术,2008,32(3):11-13. |
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| 作者姓名： | 董佩 陈伟 龙必起 |
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| 作者单位： | 1. 武汉理工大学,信息工程学院,湖北,武汉,430070
2. 上海明渡通信技术有限公司,上海,201203 |
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| 摘 要： | 针对国家地面数字电视标准GB 20600-2006,提出一种可应用于单载波模式的双导频载波恢复算法.该算法充分利用了单载波模式下双导频的特点,通过两个独立的锁频锁相环分别完成频偏估计,并采用环路加权求和的方式对抗多径干扰所导致的导频衰落.仿真证明,算法在多径信道条件下具有较好的性能.
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| 关 键 词： | 地面数字电视国标 载波恢复 双导频 多径干扰 |
| 文章编号： | 1002-8692(2008)03-0011-02 |
| 修稿时间： | 2008年1月27日 |
Algorithm Design of Dual-pilot Carrier Recovery |
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| DONG Pei,CHEN Wei,LONG Bi-qi.Algorithm Design of Dual-pilot Carrier Recovery[J].Tv Engineering,2008,32(3):11-13. |
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| Authors: | DONG Pei CHEN Wei LONG Bi-qi |
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| Affiliation: | DONG Pei1,CHEN Wei1,LONG Bi-qi2 (1. School of Information Engineering,WHUT,Wuhan 430070,China,2. Shanghai Bwave Technology Co.,Ltd,Shanghai 201203,China) |
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| Abstract: | A new dual-pilot carrier recovery algorithm, which can be applied to the single-carrier mode in national DTTB (Digital Terresting Television Broadcasting) Standard(GB 20600-2006), is presented in this paper. The algorithm takes full advantage of dual-pilot under single-carrier mode, and utilizes a couple of absolute FPLL(Frequency and Phase Lock Loop) to estimate frequency offset. Furthermore, this algorithm adopts loop weighted adding to resist pilot fading caused by multi-path interference. The simulation... |
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| Keywords: | DTTB standard carrier recovery dual-pilot multi-path interference |
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