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该代码实现了以2为因子的图像升采样和降采样功能。 降采样包括使用平滑滤波器(with using the averaging filter)和不使用平滑滤波器(without using the averaging filter)两种方法。 升采样包括像素点直接复制(pixel replication method)和线性插值(bilinear interpolatoin method)两种方法。 降采样方法和升采样方法共有4种组合。程序运行后，给出了一个原始图片和四个结果图片。 图片1.原始图片。 图片2.平滑滤波器降采样&像素点直接复制升采样。 图片3.平滑滤波器降采样&线性插值升采样。 图片4.不使用平滑滤波器降采样&像素点直接复制升采样。 图片5.不使用平滑滤波器降采样&线性插值升采样。 (The code to achieve a 2-factor image upsampling and downsampling function. Down-sampling (with using the averaging filter) and do not use smoothing filter (without using the averaging filter) are two ways to use the smoothing filter. Upsampling including the pixels copied directly (pixel replication method) and linear interpolation (bilinear interpolatoin method) two methods. Down-sampling method and liters a total of four combinations of sampling methods. The program is running, it shows a picture of an original picture and four results. Picture 1 original picture. Photo 2. Smoothing filter downsampling & the pixel directly copied liter sample. Photo 3. Smoothing filter downsampling & the linear interpolation liter sampling. Picture 4. Smoothing filter down-sampling & the pixels directly copied liter sampling. Picture 5. Use smoothing filter down-sampling & the linear interpolation liter sampling.)

各种离散信道的容量分析语仿真程序，对称信道，均匀信道，强对称信道，迭代算法等(channel capacity，bsc，)

BPSK AWGN信道编码仿真源程序，适合初学者(BPSK AWGN channel coding simulation source, suitable for beginners)

求切比雪夫窗函数和频谱；求凯塞窗函数和频谱；求凯塞窗函数和频谱等等滤波器的设计的一些程序(Some programs seek Kaiser window function and spectrum, and so the filter design seeking Chebyshev window function and spectrum seek Kaiser window function and spectrum)

针对数字图片的各种攻击方法，使用Matlab编写。(Digital images for a variety of attack methods, the use of Matlab to write.)

多目标跟踪的粒子滤波器，各种资源分配算法实现，实现串口的数据采集，调试通过可以使用，滤波求和方式实现宽带波束形成，matlab程序运行时导入数据文件作为输入参数。( Multi-target tracking particle filter, Various resource allocation algorithm, Achieve serial data acquisition, Debugging can be used, Filtering summation way broadband beamforming, Import data files as input parameters matlab program is running.)

用MATLAB编写的MIMO系统中的BLAST系统的接收程序(MATLAB prepared using MIMO system receiver BLAST system procedures)

gnumex 这是在matlab上用gnu 做c/c++编译器进行mex编译的工具。(henhao henqiangda!)

LTE standard using multiple antennas aligning with 3 GPPP standard

its a simulation of a fight with the mythical greek hydra.