通信信号处理需要的基本数学知识，包括线性代数、Z变换、线性系统、统计特性等等。-digital signal processing in commnication system require some mathematical prelinaries including linear algebra,Z transform, linear system and stochastic process.

复调制ZoomFFT是频谱细化技术的其中一种，从分析精度、计算效率、分辨率、灵活性等方面来看，是最有效的一种。-A common method of complex modulation ZoomFFT method, Chirp-Z transform, Yip-ZOOM transform based on, but the analysis accuracy, computational efficiency, resolution, spirit Active perspective,