Jointed the constant module (CM) character of digital modulated signal, the CM generalized kurtosis algorithm is deduced.

并结合调制信号的恒模特性，提出了基于广义峭度的恒模盲信号提取算法。

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The principle of digital modulated signal is analyzed in this paper. Based on instant character parameters, a kind of digital communication signal demodulation method is established.

分析了信号数字调制的基本原理，提出一种基于信号瞬时特征参数的数字通信信号解调方法。

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For wireless digital communications, digital user signal is usually at first converted into analog domain and then modulated to radio frequency by one or two steps.

对于无线数字通信而言，通常将数字用户信号首先转换到模拟域中，然后通过一个或两个步骤将其调制到无线电频率。

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