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HHT变换的matlab程序，简单明了，希望对大家的学习有帮助(HHT transform matlab program simple, we want to help the learning)

用于计算fft的MATLAB程序，采用时间提取的基2算法，计算N点的FFT，程序中会自动将N部位2的n次方个点(Used to calculate the fft of the MATLAB program, using the time base 2 extraction algorithm, calculation of N point FFT, the program will automatically N parts of two of the n-th power points)

把当前图形窗中已存在的任何字对象拖放到所需的位置；向当前图形窗输入字对象，并拖放到任何所需位置。 (align current graphics window which has been in existence for the drag and drop any object to the word for the position; current graphics to the window object input characters, and drag-and-drop to any required position.)

人工蜂群算法 matlab 实现，人工蜂群算法源代码(Artificial bee colony algorithm matlab implementation)

Convolution Encoder and Decoder 1/2 , Viterbi algorithm

matlab设计低通，带通，高通滤波器分别滤出信号。(matlab design low pass, band pass, high pass filter to filter out the signal, respectively.)

深衰落信道交织码的快速实现，非常适合初学者理解交织过程(Deep fading channel interleaving code quickly realize, very suitable for beginners to understand interleaving process)

这5个源程序均用于matlab编程，且都是在matlab环境下运行成功的代码。(This 5 source are used for matlab programming, and are run under matlab environment, the success of the code.)

在matlab中对图像进行加水印,挺简单的，包括水印嵌入和水印提取(digital watermarking)

基于PSO算法的PID参数优化MATLAB模型(PID parameter improve based on pso)