一个好的主动学习和半监督学习的多项算法matlab例程

有关于OFDM在不同信噪比下的误比特率，大家可以看看啊(on OFDM different signal-to-noise ratio in the bit error rate, we can see ah)

OFDM过程的代码，简单实用，包括梳状导频和块状导频( the code of OFDM process, simple and practical，Including comb pilot and block pilot)

用matlab仿真通信系统基带信号，包含单极性，双极性编码。(Matlab simulation of communication systems using baseband signals, including unipolar, bipolar coding.)

图像分割是把图像划分成具有实际意义的互补交迭的区域的集合。在图像分割之前，图像区域的数目未知，而在分割后各个区域同时满足均匀性和连通性的条件，故图像分割是一个复杂的过程，目前大多数研究都是针对某一类型图像或者某一具体应用的分割。图像阈值化分割的基本思想是确定一个阈值，然后把每个像素点的像素值和阈值相比较，根据比较的结果把像素划分为两类，前景(1)或背景(0)。该方法的关键是确定一个最优的阈值。常用的阈值确定方法有直接门限法、类间最大方差法(otsu法)、分水岭算法、最小误差法、最大熵法等。该段代码就是图像的阈值分割。(The image segmentation is divided into the practical significance of the emerging area of complementary set. In the image segmentation, before the number of image region, the unknown, and after each area in division at the same time satisfy the uniformity and connectivity condition, so the image segmentation is a complicated process now, most research are for a certain type image or a particular application of the division. Image threshold segmentation of the basic idea is to determine a threshold, then put each pixel threshold value of the pixels and compared, according to the result of the comparison the pixel divided into two categories, the prospect (1) or background (0). This method is the key to determine an optimal threshold. Commonly used method to determine the threshold value of direct threshold method, the largest of the variance between method (otsu method), watershed algorithm, the minimum error method, the maximum entropy method, etc. When the code is image threshold segm)

matlab code for graphical calculation in networking area

FRFT算法实现程序，用分数阶傅里叶变换进行信号处理，得到对应的视频图(frft simulation using matlab)

钢板表面质量检测中，图片是否有拉伸的监测和分析程序(Steel plate surface quality detection, image whether the stretching of the monitoring and analysis program )

This is a file of matlab code.

tvp-fa-var 宏观经济分析、货币政策研究常用程序包(tvp-fa-var toolbox, useful for macroeconomic analysis)

实现stft的三维图，3d的，很有用，自己编的，可以实现(Three-dimensional map to achieve stft, 3d, and useful, their series, can be achieved)