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matlab file for face detection

huffman code for compress

将OFDM技术运用在可见光通信的研究，并且把OFDM的高峰均比这一缺点进行了建设性的运用。(In particular, the use of OFDM (orthogonal frequency division multiplexing) for intensity modulation is investigated. The high peak-to-average ratio (PAR) in OFDM is usually considered a disadvantage in radio frequency transmission systems due to non-linearities of the power amplifier. It is demonstrated theoretically and by means of an experimental system that the high PAR in OFDM can be exploited constructively in visible light communication to intensity modulate LEDs. It is shown that the theoretical and the experimental results match very closely, and that it is possible to cover a distance of up to one meter using a single LED.)

it contains simpower systems basic matlab programs, regrding motors ,pwm, and all the basic circuits

Using matlab bit plane decomposition. It contained 2 versions. One is using functions. One is using matlab codes.

This file contains two ways for generating two independent random Gaussian variables with Matlab.it is so useful in simulation of communication channels.

说明：  一个PH值的pid仿真算法，加入扰动，以及优化的控制算法(A PID simulation algorithm of pH value, adding disturbance and optimizing control algorithm)

该程序不使用matlab自带的程序，自主编写，进行简单更改可以实现多中功能，算法思想是滤波器的实现！(The program does not use matlab own procedures, self-writing, more than a simple change in function can be achieved, the algorithm idea is the realization of filters!)

如何用Matlab画图 以西东方向为横轴，以南北方向为纵轴。（选适当的点为原点）将国土最西到最东边界在x轴上的区间划取足够多的分点xi，在每个分点处可测出南北边界点的对应坐标y1 ，y2，(How to use Matlab drawing XiDong direction in the north and south direction for the horizontal axis, for the vertical axis. (choose appropriate point for starting point the west to the east land border on the x axis of interval strokes on the locations take enough in every cent point place xi, can detect the north-south border points corresponding coordinates, y2 y1, )

计算差分盒维数的matlab程序 该程序只能计算size为NxN（N=2^n）的图形。(difference calculation of the box dimension procedures Matlab program only for the calculation of size NxN (N = 2 ^ n) graphics.)