“随机信号分析”课程中功率谱及估计的研讨

本文首先分析“随机信号分析”课程中功率谱密度和自相关函数，然后分别介绍了功率谱的估计方法，并以实验为例说明功率谱的估计方法，最后以无线通信系统中OFDM信号的带宽估计为例，说明功率谱估计方法在实际工程中的应用。本文对于功率谱及其估计的教学有一定的指导作用，并且有助于学生更好地理解理论和工程应用。

Discussion on Power Spectrum and Estimation of Random Signal Analysis Course

This paper firstly analyzes the power spectrum density and the autocorrelation function in Random Signal Analysis course. And then,the estimation methods of the power spectrum are introduced and illustrated by experi-ments respectively. Finally,the bandwidth of OFDM signal in wireless communication system is estimated as an ex-ample to illustrate the application of the power spectrum estimation method in practical engineering. This paper has some guidance to the teaching of power spectrum and its estimation,and it is helpful for the students to better un-derstand the theory and engineering application.