复高斯变量的二次型的特征函数  

Quadratic form Characteristic Function of Complex Gaussion Variable

作　　者：林云[1] 

机构地区：[1]重庆邮电大学通信学院,重庆400065

出　　处：《通信技术》2009年第3期48-50,共3页Communications Technology

基　　金：国家自然科学基金资助项目(编号:60572089);国家自然科学基金资助项目(编号:10776040);重庆市自然科学基金资助项目(编号:CSTC2006BB2359)

摘　　要：在研究分集的相关文献中,复高斯变量是经常用来分析分集问题的,但由于计算较难而令人望而生畏。文中针对经常出现在文献中的循环复高斯变量,采用求矩函数的方法对它进行分析研究,给出了从简单的复高斯变量到n维联合复高斯变量的二次型特征函数,矩函数,最后采用求联合矩的方法,给出了相关循环复高斯变量的二阶矩。该联合矩可以用于研究移动通信中相关与非相关的分集技术,而且,该分析过程也可供研究者参考。Complex Gaussian variables are mostly used in diversity field. However, its complicated computation is awe-inspiring. The discussion on the complex gaussian variables is given in this paper, including the quadratic form characteristic function from simple complex Gaussian variable to n-dimensinal complex variable and moment function. And finally by means of analyzing united moment, the second order moment of the correlated cyclic complex Gaussian variable is given. This united moment could be used to study the correlated or uncorrelated diversity technologies in mobile communication, and the analytical process could act as a reference for researchers.

关 键 词：复高斯 分集 特征函数 

分 类 号：TN929.5[电子电信—通信与信息系统]