摘要
给出了一种适用于16QAM信号的载波频偏估计算法。该算法先采用前向估计的TD算法粗略估计信号频偏并对其进行补偿。之后采用改进的科斯塔斯环频偏估计算法对信号进行精确的频偏估计并消除频偏。该算法具有估计精度高,频偏估计范围大,计算量小等特点,适合工程实现。
This paper proposes an algorithm of estimating frequency deviation of 16QAM carrier. This algorithm adopts TD algorithm to estimate a cursory frequency offset and compensates firstly, after that estimates precisely and compensates it by advanced Costas-PLL estimator. This algorithm has high estimation precision, large frequency acquisition range and small amount of computation, and is available in real time implementation.
出处
《信息工程大学学报》
2007年第4期472-475,共4页
Journal of Information Engineering University
关键词
非数据辅助
载波频偏估计
锁相环
non-data-aid （NDA）
estimating frequency deviation
PLL
