paifei_v35

自己开发的程序，图像的分形维数计算。看到比较实用才发送上来(Their own development process, the image of the fractal dimension calculation. Was sent up to see more practical)

数字基带传输仿真，关于a/d部分的仿真实习属于通信系统仿真的基本内容(Simulation of digital baseband transmission)

matlab人脸识别代码，用了PCA降维处理，可以进行简单的人脸识别(Face recognition matlab code, using the PCA dimension reduction, face recognition can be a simple)

通过给出的随机过程，该随机过程是由3个实正弦信号组成，归一化频率分别为0.1,0.25,0.27，其中相位是相互独立在【0,2*pi】上分布的随机相位；噪声是均值为0、方差为1的实高斯白噪声，信噪比为30db,30db,27db,观测样本数为N，通过bartlett法，Welch法，周期图法计算随机过程的概率谱(Given by stochastic process, the stochastic process is composed of three real sine signal, the normalized frequency were 0.1, 0.25, 0.27, including phase is independent in [0, 2* PI] on the distribution of random phase Noise variance is the mean to 0, 1 real gaussian white noise, signal to noise ratio of 30 db, 30 db, db, and the observation sample for N, by bartlett, Welch, periodogram spectrum method to calculate the probability of the random process)

运用误差矢量幅值法(EVM)对信号的载噪比进行估计(Method using error vector magnitude (EVM) of the carrier signal-to-noise ratio estimate)

yalmip 较早的外文教程，通俗易懂。(yalmip )

MATLAB黄金分割法求最小值，在区间中点的函数值作为返回值。(Golden Section Method MATLAB minimum, midpoint in the range of the function value as the return value.)

ldpc的matlab实现程序，和几篇文档资料(ldpc matlab implementation procedures, and several documentation)

对位图图像利用JPEG标准进行正交变换、量化、扫描从而达到压缩，同时解压显示其压缩图像。(Bitmap image using JPEG standard orthogonal transformation, quantization, scanning to achieve the compression, and decompression display the compressed image.)

用于计算马氏距离，并可以用于优选近红外光谱的校正集和预测集(used in the calculation of the Mahalanobis distance, and can be used for optimization of near-infrared spectroscopy calibration set and the prediction)