chap3

Vth-Vth0-Vsb for NMOS

磨床加工工件的数学建模一直是一个难题，本代码对磨床加工问题建立了一个好的模型(Mathematical modeling of grinding workpiece has been a problem, the problem of the grinding machine code created a good model)

Mann-Kendall 方法是一种非参数统计检验方法。非参数检验方法也称无分布检验,其 优点是不需要样本遵从一定的分布，改进了其中缺点，使用效果更好(Mann-Kendall method)

用雅克比迭代法解椭圆型方程，这是椭圆型方程的差分解法。见于孙志忠编的《偏微分方程数值解法》的p41例题( Solutions of Elliptic Equations with Jacques iterative method, which is the solution of elliptic differential equations. Seen SUN Zhi-zhong series "Numerical Solution of Partial Differential Equations" examples of p41)

3GPP组织给出的LTE系统高层无线资源控制RRC层规范，希望帮到LTERRC层爱好者。(3GPP LTE system tissue senior radio resource control (RRC) layer specification given, I hope to help LTERRC layer enthusiasts.)

搭建汽车操纵稳定性和平顺性仿真中常用的魔术轮胎和dugoff轮胎，整理到一个simulink文件中，两种轮胎的模型均已和carsim中的仿真结果进行对比和验证，精度较高。(The magic tire and Dugoff tire commonly used in vehicle handling stability and ride comfort simulation are built and sorted into a Simulink file. The two tire models have been compared and validated with the simulation results in Carsim, and the accuracy is high.)

采用正交频分复用（OFDM）调制的跳频系统仿真模块，利用Simulink工具箱搭建。可更改跳频跳速,跳频频率数，载波频率，跳频间隔，FFT运算长度,循环前缀位数等相关参数。信道采用瑞利多径衰落信道和高斯信道，相关参数也可更改。希望有一定的参考价值，也希望站长开通我的下载功能，ID：gly201,非常感谢！(A simulation on Hopping Frequency communication system based on the OFDM technique.)

This MATLAB code computes the covariance matrix of a random variable

说明：  传统PID控制matlab程序，希望对大家有所帮助，共同学习。(Traditional PID control matlab program, I hope all of you to help, learning together.)

小波变换的重建，通过matlab内的小波包函数实现(The reconstruction of the wavelet transform, wavelet packet is realized by Matlab function)