PCA_based-Face-Recognition-System

modulation coding for communication channel

an investigation on use of chaotic sequence in DS-CDMA. The DS-CDMA systems offer physical layer security without the need for a significant increase in computation or power requirements. Nowadays, DSCDMA has been used widely. These systems suffers from multiple access interference because of other users transmitting in the cell, channel inter symbol interference and additive white Gaussian noise. Codes have an effective role in DSCDMA system, so M-sequences; gold sequences have been used as spreading codes in DS-CDMA. These sequences by shift registers and periodic in nature are developed. However, these sequences are not enough and also limit the security. This paper presents an investigation on use of new type of sequences called chaotic sequences for DS-CDMA system. These sequences by chaotic maps are generated.

atmel ATMEGA16 Microcontroller

该算法构造了一个列重为4的校验矩阵，并检验了是否存在周长为8的环(The algorithm constructs a series of important check matrix of 4 and test whether there was a perimeter ring of 8 )

双闭环调速系统仿真 简单实用 matlab 6.5版本 谢谢大家支持(Simulation of double-loop speed control system is simple and practical version of matlab 6.5 Thank you for your support)

Hi this is a gbvs file. this is a matlab file

code for rssi cALCULATION TO GET IT

伪Wigner-Ville分布对实验采集外圈故障的振动信号进行分析，看出信号存在故障引起的冲击分量(The pseudo Wigner-Ville distribution is analyzed to the vibration signal of the outer ring fault, and the impact component caused by the signal is found.)

说明：  东华大学机器学习核密度估计大作业 第一部分是一个三维的彩色KDE估计图（最好用MATLAB画）；第二部分是测试图片的运动目标二值图像检测结果（运动员用白色像素，背景用黑色）(Big assignment of kernel density estimation for machine learning in Donghua University The first part is a three-dimensional color KDE estimation map (preferably drawn with Matlab); the second part is the detection result of the moving target binary image of the test image (athletes use white pixels, background use black))

哈工大数学实验应用MATLAB设计磨光公式(HIT mathematical experiment using MATLAB design polished formula)