Lesson-4

OFDM频谱分析用。编写了三种保护间隔（循环前缀，零添加，伪随机码添加）的频谱显示程序，可研究不同长度保护间隔，不同种类保护间隔对OFDM频谱的影响(OFDM spectrum analysis)

image classification using SVM

说明：  主要用于地震数据处理，例如面波频散曲线的提取。(Mainly used for seismic data processing)

This toolbox was written for my own education and to give me a chance to explore the models a bit. It is NOT intended for any serious applications and it does not NOT do many of things you would want a mature implementation to do, like leaf pruning. If you wish to use a strong implementation I recommend Scikit Learn / Python. For Matlab I do not really have a recommendation.

关于OFDM的调制仿真，其中使用是QPSK调制，包含FFT、循环前缀、加窗等基本过程。(OFDM modulation on the simulation, in which a QPSK modulation, contains the basic process FFT, cyclic prefix, windowing and so on.)

用simulink中的SimMechanics模块搭建两关节机械臂模型，并用S-function函数编写控制程序，采用的是计算力矩法跟踪参考信号。(SimMechanics module structures in simulink model of two-joint robot arm, and write control program, a function of the S-function is computed torque method tracks the reference signal.)

对所拍摄的车牌进行切割、识别，并对识别结果进行语音播报。(Taken on the license plate cutting, recognition, and voice recognition results broadcast.)

Skeleton to test large-asset handling. The asset in question is one million.

计算图像的平均梯度和边缘强度的matlab源码，M文件形式(Calculating the average image intensity gradient and the edge of the matlab source, M documents in the form)

传统的信道估计仿真，有注释，有详细的教程流程解释，生成BER图，可改变调制方式等等(The traditional channel estimation simulation, notes, a detailed tutorial to explain the process to generate BER map, you can change the modulation scheme, etc.)