FIR 底通和带通滤波器和IIR 底通和带通滤波器，相参脉冲串复调制信号，解耦，恢复原信号，仿真效果非常好，搭建OFDM通信系统的框架，基于chebyshev的水声信号分析，PLS部分最小二乘工具箱。- Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Complex modulation coherent pulse train signal, Decoupling, restore the original signal, Simulation of the effect is very good, Build a framework OFDM communication system, Based chebyshev underwater acoustic signal analysis, PLS PLS toolbox.