短序列条件下快速频率估计性能分析  

Performance analysis for fast frequency estimation with short sequences

作　　者：舒汀[1] 赵卫宏[1] 陆锦辉[1] 

机构地区：[1]南京理工大学电子工程系,江苏南京210094

出　　处：《系统工程与电子技术》2006年第10期1509-1512,共4页Systems Engineering and Electronics

摘　　要：对短序列条件下的三种快速频率估计算法性能进行了讨论。首先分别叙述了三种快速频率估计算法的机理,随后进一步给出了频率估计的Cramer-Rao下界、计算机仿真结果、实测数据计算结果以及估计精度和计算量分析。并同其它频率估计算法的性能进行了比较,指出了存在信噪比门限的原因。所得结论对工程人员选择算法具有参考价值。The performances of the three computationally efficient frequency estimation algorithms with short sequences are discussed in detail. First, the principle of frequency estimation is presented. Further, the Cramer-Rao bound of frequency estimation and the performance analysis based on the simulation results and measured data results are derived. The performances are compared with those of other frequency estimation algorithms. The explanation for the SNR threshold is also provided. Some general conclusions are significant and valuable to engineers in practical designing.

关 键 词：频率估计 正弦信号 短序列 快速算法 

分 类 号：TN911.1[电子电信—通信与信息系统] TN850[电子电信—信息与通信工程]