DVB-T接收机符号同步的一种新算法  

Novel Symbol-synchronization Algorithm for DVB-T Receiver

作　　者：陈胜[1] 邵怀宗[1] 彭启琮[1] 

机构地区：[1]电子科技大学通信与信息工程学院,四川省成都市610054

出　　处：《电子工程师》2007年第9期37-40,共4页Electronic Engineer

摘　　要：在DVB-T(DVB(数字视频广播)-Terrestrial)系统中,传统的ML(最大似然)符号同步算法计算量大,经改进的MC(最大相关)算法计算复杂度虽降低了,但其估计性能却大大下降。为了降低计算复杂度和提高估计的性能,在ML算法的基础上,提出了一种计算复杂度较低的符号定时同步算法。仿真结果表明,在瑞利信道下,新算法的定时估计性能优于其他两种算法。In DVB-T（ Digital Terrestrial Video Broadcasting） system, there is high calculating complexity in conventional ML（ Maximum Likelihood） algorithm, although the calculating complexity had been reduced in improved MC （ Maximum Correlation） algorithm, the estimation performance also had been reduced. To reduce the calculating complexity and improve the estimation performance, this paper , based on the ML algorithm, presents a novel symbol - synchronization algorithm of which calculating complexity is very low. In Rayleigh channel, the performance of the new algorithm is supper to ML and MC.

关 键 词：DVB-T标准 接收机 正交频分复用 符号同步 

分 类 号：TN914.3[电子电信—通信与信息系统]