pd

说明：  中点公式求取导数 三点法求函数的导数 五点法求函数的导数 三次样条法求函数的导数 自适应法求函数的导数 辛普森数值微分法法求函数的导数 (Midpoint formula to strike a derivative of a function point method five-point derivative of the derivative of the function Method cubic spline derivative of a function of the adaptive function of the derivative Method Numerical Differentiation Method Simpson derivative of the function)

BPSK调制的通信系统，包括： （1）随机数据产生及BPSK 调制 （2）插值处理 （3）三种低通滤波器的设计（从升余弦滤波器改为平方根升余弦滤波器 （4）载波调制 （5）从升余弦滤波器改为平方根升余弦滤波器 （6）AWGN 信道 （7）匹配滤波 （8）采样与解调，误码率计算 （9）误码率的理论曲线以及仿真曲线 整个(A BPSK based communication system, including modulation, AWGN, low-pass filter,BER caculation.)

光纤LP13模式,光纤模式计算，纤芯模式，有效折射率(Fiber LP13 mode, fiber mode calculation, fiber core mode, effective refractive index)

说明：  CT三维重建程序代码，正常运行，适合研究这方面的初学者学习借鉴(CT three-dimensional reconstruction program code, normal operation, suitable for beginners to learn from this aspect)

Demo for License plate recognition

利用快速傅立叶算法，实现快速沃尔什-哈达玛变换及其逆变换(Using fast Fourier algorithm, fast Walsh- Hadamard transform and its inverse transform)

OFDM传输系统基本Matlab仿真程序，信道模型为AWGN/多径瑞利信道，调制方式可选择QPSK/16QAM/64QAM(OFDM transmission system basically Matlab simulation program, channel model for AWGN/Multipath Rayleigh channel, selectable modulation QPSK/16QAM/64QAM)

This simulation demonstrates the use of the PMSM in a closed-loop speed and current control on a 1.1 kW 3000 rpm industrial motor. A three-phase motor rated 1.1 KW, 220 V, 3000 rpm is fed by a PWM inverter. In this simulation, the whole system is built entirely with standard Simulink blocks (without resort to blocksets).

该工具包是最新版本的copula工具厢。可实现copula建模，并有copula函数可选择。((The toolkit is the latest version of the pair copula toolkit. The copula modeling of high dimensional data can be realized, and sometimes the copula function can be selected.))

数值计算，微分和积分的几个例子，针对于MATLAB2011a(numerical calculation)