复加性白高斯噪声中随机幅值多项式相位信号的Cramer-Rao下界  

Cramer Rao Bounds for Random Amplitude Polynomial Phase Signals in Complex Gaussian Additive Noises

作　　者：毛用才[1] 保铮[1] 

机构地区：[1]西安电子科技大学雷达信号处理重点实验室

出　　处：《通信学报》1997年第9期50-54,共5页Journal on Communications

摘　　要：本文考虑了在复的白高斯加性噪声中观测的多个随机幅值多项式相位信号的参数估计问题，导出了多项式相位系数估计以及幅值样本均值的Ｆｉｓｈｅｒ信息矩阵，因而利用数值计算可得到相应的Ｃｒａｍｅｒ－Ｒａｏ界（ＣＲＢ），模拟结果验证了所得结果的正确性。This paper derives the Fisher information matrix for the estimated parameters of multicomponent complex signal with random amplitudes and polynomial phases, measured in additive Gaussian noise. Signals of this type appear in many signal processing applications, and the CRB formulas have practical importance in these applications. Exact and approximate forms of the Fisher information matrix are presented. Numerical studies support the obtained results.

关 键 词：随机幅值 复值加性噪声 多项式相位信号 噪声 

分 类 号：TN911.4[电子电信—通信与信息系统]