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本文应用复码的D变换展开方法[1],研究了复码及其数字调制信号的归一化自相关函数和归一化功率谱密度函数,得出精确通用表达式。文中给出了与所得数学模型相对应的线性系统模型。本文所用的分析方法和得出的某些结论适用于所有数字信号数字调制波的归一化自关相函数和归一化功率谱密度函数的分析。文末还给出工程应用计算实例。
In this paper, the complex code D transform expansion method [1], the complex code and its digital modulation signal normalized autocorrelation function and the normalized power spectral density function, obtained accurate general expressions. The paper presents a linear system model that corresponds to the resulting mathematical model. The analysis method and some conclusions drawn in this paper are applicable to the analysis of the normalized self-off phase function and the normalized power spectral density function of all digital modulated signals. The article also gives examples of engineering applications.