DTMB系统的同步算法设计与实现  

Design and implementation of synchronization for DTMB

作　　者：赵慧冬[1] 黑勇[1] 乔树山[1] 

机构地区：[1]中国科学院微电子研究所,北京100029

出　　处：《电子技术应用》2012年第8期56-58,62,共4页Application of Electronic Technique

基　　金：国家科技重大专项项目(2009ZX01034)

摘　　要：针对DTMB系统设计并实现了一种同步方案。该方案采用延迟相关和本地互相关的联合同步算法,准确地完成信号帧同步,通过载波频偏估计和纠正有效地抵抗多径和频偏的影响。仿真表明在多径信道下该方案能够准确地实现帧同步和载波频偏估计。该联合同步方案复杂度低,易于硬件实现。This paper provides an effective synchronization scheme for DTMB system. The scheme adopts a joint delay correlation and local correlation synchronization algorithm, which achieves a good performance. The effect of muhipath and carrier frequency offset is corrected by carrier frequency correction. Simulation results indicate that the scheme can achieve frame synchronization and carrier frequency correction in multipath channel. The structure of scheme has low complexity and is easy to implement.

关 键 词：DTMB 同步 载波频偏 

分 类 号：TN919.3[电子电信—通信与信息系统]