add-noise

说明：  该程序是在matlab中利用窗函数法设计滤波器的示例(The program is using the window function matlab filter design example)

随机信号功率谱分析 (1) 生成信号，被淹没在在噪声中； (2) 试用周期图法估计信号的功率谱； (3) 选用不同窗，使用修正周期图法估计信号的功率谱； (4) 对一段语音信号，使用LD算法估计其功率谱； (5) 详细列出功率谱估计的步骤和原理。 (power spectral analys)

LDPC编码的C语言实现。包括校验矩阵，生产矩阵的生成，编码，译码等。(LDPC coding in C language. Including the parity matrix, matrix production generation, encoding, decoding and the like.)

瑞利信道的仿真，里面有瑞利的文档知识，仿真最后出瑞利分布的概率分布密度图和多普勒滤波器的频响图(Rayleigh channel simulation, which has knowledge of the Rayleigh documentation, simulation finally the probability distribution of the Rayleigh distribution density map and Doppler filter response chart)

说明：  注释非常详细的FFT变换，用matlab实现两个正弦函数的区分，初学着都能看懂(Notes very detailed FFT transform, with the achievement of the two sine function matlab distinction, the novice can understand)

Fuzzy c means code for doing clustering.

该工具箱为KSVD算法的实现，其用来自适应地对信号就行稀疏表示，达到良好的稀疏性(The toolbox is KSVD algorithm, it is used to adaptively sparse representation of the signal on the line to achieve a good sparse )

matlab基于KF和EKF的工具箱描述(Optimal fi ltering with Kalman fi lters and smoothers – a Manual for Matlab toolbox EKF/UKF)

OPC DA 3.0 specification

实现图像的边缘提取，在matlab当中进行编程即可实现(Edge extraction of image)