附录程序

阶跃相应绘图，可以调整波形，画出bode图(Step the corresponding drawings, waveforms can be adjusted, to draw bode diagram)

matlab里面有用的一个时频工具箱，可以做wvd等(matlab inside a useful time-frequency toolbox, you can make such wvd)

说明：  matlab高效编程程序源代码第一章，可以运行。(efficient programming source code matlab chapter, you can run.)

OFDM 通信信道设计,主要是关于无线移动通信中Jakes 模型进行信道仿真和相应的改进算法。(OFDM communication channel system design)

时变深衰落信道中的自适应均衡技术........(Deep fading channel time-varying adaptive equalization......)

给出一个具体PWM逆变器的仿真实例，通过仿真 ，可以得出实际运行中的电压、电流的波形 (Give a specific instance of PWM inverter simulation, simulation can be drawn from the actual operation of the voltage and current waveforms)

说明：  rk-4 四阶龙格库塔法求解代码及结果图片(rk-4 Fourth order Runge Kutta method solution code and result picture)

生成混沌种子。能对原始的数字水印信息进行加密，分别显示(Generation of Chaos seed. To the original information of the digital watermark is encrypted, respectively, show)

A Genetic Algorithm Based Optimal Sink and Relay Nodes Placement Strategy for Increasing the Lifetime of the Wireless Sensor Network

利用MATLAB来实现离散傅里叶变换和离散傅里叶逆变换，N为离散傅里叶变换长度，形式为xk=IDFT（xn，N）(To achieve the discrete Fu Liye transform and discrete Fu Liye transform by using MATLAB, N as the discrete Fu Liye transform length, form xk=IDFT (xn, N))