noise_variance

直接序列扩频的系统仿真，适合理解原理，很实用(Simulation of direct sequence spread spectrum system for understanding the principle, it is practical)

说明：  找到的一些IM相关知识，比较有用，欢迎参考！(about IM)

A simulink model for chaotic Gyrostat system

三相静止坐标到两相静止坐标的转换模型 三相静止坐标abc到两相旋转坐标dq的转换模型(Three-phase stationary coordinate abc three-phase stationary coordinate transformation model to the two-phase stationary coordinate transformation model to the two-phase rotating coordinate dq)

数字通信---基于matlab的仿真计算，PDF文本形式(Matlab Simulation Caculation)

小波分析必备教材，小波十讲简明较易懂，帮助学习小波理论(wavelet)

在机器学习中经常会用到支持向量机，该代码是再使用支持向量机前对数据进行主成分分析的代码(We often meet support vector machine in machine learning , the code is about the principal component analysis befor using support vector machine (SVM).)

变步长nlms自适应对消滤波器，步长可变，滤波器系数更新方式有多种(nlms adaptive filter)

显示2维探底雷达剖面图，即波形图.读取geo和out文件(2 dimensional bottom radar profile, i.e. waveform)

The MATLAB function generates a BPSK modulated signal with and without noise.