jisuanqi

构建CDMA通信系统，包括发送，交织，调制，解调，接收等模块(Construction of CDMA communication systems, including the transmission, interleaving, modulation, demodulation, receiver modules)

设计一个IIR数字低通滤波器， 逼近一组模拟滤波器的指标参数（通带截止频率Wp=2*pi*2000rad/s,阻带边界频率Ws=2*pi*3000rad/s,通带波纹 Rp=3db, 阻带衰减Rs=15db, 采样频率f=10000Hz）； 分别用脉冲响应不变法和双线性变换法实现设计，列出传递函数并描绘模拟和数字滤波器的幅频和相频响应曲线。用上述设计滤波器完成几组给定信号的滤波，证明滤波器的有效性和滤波范围限制.(Design a IIR digital low-pass filter, approaching a group of analog filters indicator parameters (pass-band cut-off frequency Wp = 2* pi* 2000rad/s, stop-band edge frequency Ws = 2* pi* 3000rad/s, pass-band ripple Rp = 3db, stop-band attenuation Rs = 15db, the sampling frequency f = 10000Hz) were used to change the impulse response method and bilinear transformation method for design, list and describe the transfer function of analog and digital filter amplitude-frequency and phase-frequency response curve. A filter was designed with the completion of the above-mentioned groups of a given signal filtering, to prove the effectiveness of filters and filter limit)

matlab programme to simulate beamforming in a communication system.

电压型单相全桥逆变器的simulink仿真模型(Simulink simulation model of voltage type single-phase full-bridge inverter)

这是简单的一个可以绘制直线的matlab程序。这个程序只能绘制直线，圆等。程序简单，希望大家互相学习探讨。(this is a program about how to draw the line,the circle and so on.I hope we can learn the programe each other. thank you.)

说明：  数值计算啁啾光纤光栅(Numerical Calculation of chirped fiber grating)

说明：  简单例子A simple exampleA simple example(A simple example)

光学传输中的Airy beam,这种由于具有独特的空间特性将广泛的应用于信号传输系统之中(Airy beam)

反射式半导体光放大器的静态建模和动态建模(steady model and dynamic model of RSOA )

this is the codeiing fo it