非零均值乘性噪声中的二维三次非线性耦合  

Two-dimensional cubic nonlinear coupling estimation in nonzero mean multiplicative noise

作　　者：窦慧晶[1] 王树勋[1] 魏小丽[1] 汪飞[1] 

机构地区：[1]吉林大学通信工程学院,吉林长春130022

出　　处：《吉林大学学报（工学版）》2004年第3期483-486,共4页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金资助项目(60172032);教育部博士学科点专项基金资助项目(2001404).

摘　　要：利用二维循环平稳理论研究了非零均值乘性噪声中的二维三次非线性耦合问题。定义了特殊的四阶时间平均多矩谱,并用其有效地估计了参与二维三次非线性耦合的谐波频率和耦合产生的谐波频率。该方法不需限制噪声的颜色和分布。仿真实验证明了文中结论的正确性。Cubic nonlinear coupling problem in nonzero mean multiplicative noise was studied by using two-dimensional cyclostationary theory. A special fourth-order time-average moment spectrum was defined for the estimation of cubic nonlinear coupling, which can be applied to obtain the coupled and coupling frequencies in nonzero-mean multiplicative noise and additive noise of any mean without any constrain on the distribution and noise color. The simulation examples illustrate the validity and correctness of this proposed method.

关 键 词：信息处理技术 二维谐波 三次非线性耦合 乘性噪声 四阶时间平均多矩谱 

分 类 号：TN929.3[电子电信—通信与信息系统]