fig1_13

matlab code for qpsk

OFDM系统完美仿真绝对可用包含星座图，时域频域仿真及传输函数(OFDM system is absolutely perfect simulation can include constellation, time domain simulation and frequency domain transfer function)

这段程序是产生一个叠加信号，然后计算传递函数，进行相关分析(this is a program which generate a new signal,calculate transfer function and doing correlation analysis )

用于汽车系统动力学分析，包含了汽车振动分析等，有垂向、横向、纵向动力学3个方面(For automotive system dynamics analysis, including the automotive vibration analysis, there are vertical, horizontal, vertical dynamics of 3 aspects)

小波包能量巨程序（已做归一化处理，用于对振动信号提取特征）(Wavelet packet energy giant program (normalization process has been done for the vibration signal feature extraction))

Cyclic code programs using MATLAB software.

matlab 数值积分工具包(Matlab numerical integration tool kit)

《信号与系统的MATLAB仿真》 这是一本供初学者使用的手册类书籍，内含一个word文档。(《Signals and Systems of the MATLAB simulation》 This is a manual for beginners books, including a word document.)

Hybrid DS-FH communication systems

cognitive radio, spectrum sensing, spectrum allocation