range_migration

用matlab编程解决背包问题 可以运行 收敛效果好 附图(Solve the knapsack problem with the matlab programming convergence effect can run photos)

时域离散信号的程序代码。。适合初学者进行学习(Discrete time domain signa)

QR码作为一种可高速、全方位识别的二维条码,已经在各行各业中得到了应用,并具有很大发展潜力.本文针对QR码图像的识别过程中可能遇到的图像噪声干扰、QR码占实际拍摄图像的一部分、倾斜、几何失真等问题进行了研究,提出了通过改进型中值滤波去除噪声,使用QR码符号特性定位并对倾斜图像进行旋转,对失真不严重的图像采用控制点变换和双线性插值方法进行几何校正.实验证明, 本文的方法简单有效, 可以用于提高条码的正确识别率.(As a high-speed, full identification of the two-dimensional bar code, QR code has been applied in all walks of life, and also has great potential for development. In this paper, aiming at QR code image recognition process may be encountered in noise interference, QR code accounting for the actual captured image just a part, slant, geometric distortion, and other issues have been studied, put forward through improved median filter to remove noise, use QR code symbol characteristics to locate and rotate the tilted image, distortion which is not serious use control-point transform and spatial bilinear interpolation method for geometric correction. The results show that this method is simple and effective, can be used to improve the QR code correct recognition rate.)

it contains matlab code for ofdm systems it is .m file extension

Digital image processing using matlab - Rafael C. Gonzalez, Richard E. Woods, Steven L. Eddins - 0130085197(Digital image processing using matlab- Rafael C. Gonzalez, Richard E. Woods, Steven L. Eddins- 0130085197)

说明：  NSCT工具箱，研究非降采样contourlet变换的工具(NSCT toolbox to study the transformation of nonsubsampling contourlet )

直接序列扩频就是直接用具有高码率的扩频码序列在发端去扩展信号的频谱。而在收端，用相同的扩频码序列去进行解扩还原成原始的信息。(Direct Sequence Spread Spectrum is the direct use of the spreading code sequence with a high rate in the originator to expand the spectrum of the signal. Receiving end, using the same spreading code sequence to despread the broadening of the spread spectrum signal to restore the original information.)

in this projeh DVB-T signal can simulate by matlab

通过改变副载波偏移模拟仿真与接收到的未经偏移的互相关值(By changing the cross-correlation value of subcarrier offset simulation and received without offset)

C has only a handful of keywords and is a bit rough around the edges, and it rocks. You can do anything with it. Like the C, G, and D chords on a guitar, you can learn the basic mechanics pretty quickly, and then spend the rest of your life getting better. The people who don’t get it fear its power and think it too edgy to be safe