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说明：  以上是MATLAB编写的一些程序，用于产生一些基本的信号。(prepared by the procedures used to produce some of the basic signal.)

说明：  三维电磁场FDTD程序（3D-FDTD matlab）PEC边界(（3D-FDTD matlab）PEC)

matlab插值与拟合，包含了ppt课件以及实例，方便于更好的理解与学习，还有程序代码(The interpolation and fitting_matlab)

本代码是《通信信号处理》课程的大作业相应的代码。主要是通信信号发射端的仿真，具体功能是：1. 产生任意长度的伪随机序列，将序列映射为I,Q两路的信号，2.均方根升余弦滤波器成型. 3.经过通带衰减为3dB的倾斜滤波器（模拟信道衰落效果）4.插零，半带滤波器升抽样。 5.NCO处理单元调制(This code is communication signal processing courses corresponding to the large code. Mainly is the simulation of the communication signal transmitter, the specific functions are: 1. Produce arbitrary length of the pseudo-random sequence, the sequence mapping for the I, Q two-way signal, 2. Raise the root-mean-square filter forming 3. After passband attenuation 3dB tilt filter (analog channel fading effect) 4. Insert zero, half-band filter l sampling. 5. NCO processing unit modulation)

说明：  清华大学出版社出版的科学与工程计算技术丛书/MATLAB GUI程序设计得课件以及源代码(Science and Engineering Computing Technology Series/MATLAB GUI Programming Courseware and Source Code Published by Tsinghua University Press)

用蒙特卡罗仿真研究一个通信系统的误比特率BER。假设通信系统满足条件：信源输出的数据符号是相互独立和等概的；在发射机中没有进行脉冲形成；信道是AWGN信道(Using Monte Carlo simulation of a communication system bit error rate BER. Suppose communications systems to meet the conditions: the data source output symbols are independent, and so almost the no pulse in the transmitter in the form channel is AWGN channel)

three phase induction motor performance.

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Preconditioned Conjugate Gradient iterative Ax=b solver.Routine to solve a symmetric positive definite linearsystem Ax = b using the Preconditioned Conjugate

说明：  function result = apm(results1,results2) %