摘要
DTMB为我国地面数字电视标准。从DTMB信号帧结构特点出发,分析了帧头的PN序列结构和同步需求;然后提出了一种基于PN序列DTMB信号同步方法,该方法分为粗捕获、细捕获与帧头跟踪三个步骤,其中细捕获阶段利用了PN序列的相位特性;最后对该同步方法进行了仿真分析,验证了同步方法的有效性。
DTMB is Chinese national terrestrial digital television standard. This paper first analyzes the structure of PN sequence in frame head and DTMB signal synchronization demand, then a DTMB synchronization method based on PN sequence is proposed, the method is divided into three stages: coarse acquisition, fine acquisition and frame head tracking. Phase characteristics of PN sequence are used during fine acquisition. The synchronization method is verified through simulation finally.
作者
高腾
金晓帆
王李军
GAO Teng;JIN Xiao-fan;WANG Li-jun(Science and Technology on Communication Information Security Control Laboratory,Jiaxing Zhejiang 314033,China;No.36 Research Institute of CETC,Jiaxing Zhejiang 314033,China)
出处
《通信对抗》
2017年第4期13-16,33,共5页
Communication Countermeasures
关键词
DTMB
PN序列
同步
信号捕获
DTMB
PN sequence
synchronization
signal acquisition
