qpsk moudulation

说明：  时域滤波方法，频域滤波大全（包括中值滤波，均值滤波，理想低通，巴特沃斯低通 带通滤波器(Time-domain filtering, frequency domain filtering Daquan (including the median filter, mean filter, the ideal low-pass, Butterworth low-pass band-pass filter)

GPS仿真程序，matlab版，合适研究GPS的学者，和相关的开发研究 (GPS emulator, matlab version, suitable GPS research scholars, and related research and development)

RSA algorithm is one of the main encryption and decryption algorithm.

这是一个matlab程序，用于计算混沌系统时间序列的盒维数(This is a matlab procedures used to calculate the time series of chaotic systems box dimension)

source code for face recognition using ica (independent component analysis)

能够把输入信号分解为多个IMF分量，并进行Hilbert变换，求得信号的时频分布谱图。(Be able to input signal is decomposed into several IMF components and carry out Hilbert transform, time-frequency distribution obtained spectrum.)

low pass filtering to remove noise

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度(The main purpose is to fight against multipath fading. Due to the presence of multipath fading, the first after they have the same frame different paths to reach the client delay. Would cause mutual interference between sub-carriers in the frequency domain, affecting performance. In addition, thanks to the cyclic prefix, so IFFT FFT operation to the linear convolution of the original into a circular convolution, greatly simplifying the corresponding signal processing complexity)

combined optimal control technique for robot manipulators

代码中给出了基于PCA算法的人脸识别的详细步骤，具体过程，包括求平均脸，K-L变换，SVD分解，最后获得特征空间，训练样本400张，选取人脸数据库是ORL的，给出了具体的算法解释说明。