| 地面数字电视系统中载波同步方法 |
| |
| 引用本文： | 张超,张晓林,张帅.地面数字电视系统中载波同步方法[J].北京航空航天大学学报,2008,34(9):1024-1027. |
| |
| 作者姓名： | 张超 张晓林 张帅 |
| |
| 作者单位： | 北京航空航天大学 电子信息工程学院, 北京 100191 |
| |
| 摘 要： | 根据数字电视地面广播传输系统国家标准的技术特点和帧结构,提出了一种基于PN (Pseudo Noise)帧同步头的载波同步算法.首先在帧头捕获之后,接收端本地产生和接收帧头相一致的PN序列,根据帧头中的前后两个子序列的相关结果进行频率估计并矫正频率偏差,再根据PN相关峰进行相位纠正.该载波同步方案适用于地面数字电视系统中的3种不同的帧头模式,并且适用于单载波和多载波两种模式的帧结构.进行了理论分析和计算,给出仿真结果和分析.该同步方案具有同步速度快、抗噪声性能好、适合硬件实现等特点,并已应用于数字电视接收机硬件系统中.
|
| 关 键 词： | 数字电视 正交频分复用 同步 伪随机序列 |
| 收稿时间： | 2007-08-16 |
Carrier synchronization method for digital terrestrial television system |
| |
| Zhang Chao,Zhang Xiaolin,Zhang Shuai.Carrier synchronization method for digital terrestrial television system[J].Journal of Beijing University of Aeronautics and Astronautics,2008,34(9):1024-1027. |
| |
| Authors: | Zhang Chao Zhang Xiaolin Zhang Shuai |
| |
| Institution: | School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
| |
| Abstract: | According to the technique characteristic and frame structure of the China national standard for digital television terrestrial broadcasting system,a carrier synchronization scheme based on the pseudo noise(PN) frame header was presented.After the acquisition of PN frame header,the same PN sequence was recovered at the receiver.Based on the sub-sequence correlation result,the frequency offset was first calculated,and then the phase error was corrected according to the correlation peak.This synchronization m... |
| |
| Keywords: | digital television orthogonal frequency division multiplexing synchronization pseudo random sequence |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《北京航空航天大学学报》浏览原始摘要信息 |
| 点击此处可从《北京航空航天大学学报》下载免费的PDF全文 |
