Zero-Crossing

计算前35阶zernike多项式，本程序可方便matlab调用计算(Calculation of the first 35 order zernike polynomial, this procedure can be easily calculated matlab call)

OF,实际上OF是MCM Multi-CarrierModulation，多载波调制的一种。其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰 ICI 。每个子信道上的信号带宽小于信道的相关带宽，因此每个子信道上的可以看成平坦性衰落，从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分，信道均衡变得相对容易。在向B3G/4G演进的过程中，OFDM是关键的技术之一，可以结合分集，时空编码，干扰和信道间干扰抑制以及智能天线技术，最大限度的提高了系统性能。(OF)

该MATLAB程序提供了简单的整数规划功能(The MATLAB program provides a simple function of integer programming)

A Model-based Document Clustering Toolbox

计算太阳黑子的活动周期，分别利用周期图法，Lenvinson-Durbin法和Burg法求得其功率谱，并画出曲线，观察得到活动周期(Calculation of sunspot activity cycle, namely the use of periodogram, Lenvinson-Durbin and Burg obtained the power spectrum, and draw curve, observation cycle)

数字通信系统模拟，AWGN，给定不同的SNR，测试BPSK 4PAM 8PAM抗噪声能力。(Digital communication system simulation, AWGN, given the different SNR, test BPSK 4PAM 8PAM noise immunity.)

位移约束下，利用ESO方法进行连续体结构拓扑优化(ESO method-based topology optimization of the continuous structure under the constraint of displacement)

三相PWM叠加三次谐波控制Simulink仿真，另加一滤波器观看PWM经过低通滤波后的波形，适合电力电子初学者(Superposition of three harmonic three-phase PWM control Simulink simulation, plus a watch PWM filter through after the low-pass wave filter for power electronics for beginners)

该文件是一个matlab程序，该程序是用来求出一个二值图像的面积，已经检验运行成功！(The file is a matlab program that is used to derive a binary image of the area, has been tested to run successfully!)

中值滤波算法去除椒盐噪声，小生亲自编写的(voice pepper removal algorithm was removed during the wave)