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modulaciones digitales en matlab codificacion de hamming what happend

一本介绍工程类数学的书籍，包括统计，优化etc.很不错，很基础(1 describes engineering mathematics books, including statistics, optimization etc. Very good, very basic)

数字水印预处理Arnold置乱程序。在水印的嵌入与提取中用来置乱图像。(Digital Watermarking Arnold scrambling pretreatment procedures. In the watermark embedding and extraction of images used to scrambling.)

video code for playing freedom

摘要:正交频分复用(OFDM)是第四代移动通信的核心技术。该文首先简要介绍了OFDM基本原理,重点研究了理想同步情 况下,保护时隙(CP)和不同的信道估计方法在高斯信道和多径瑞利衰落信道下对OFDM系统性能的影响。在给出OFDM系 统模型的基础上,用MATLAB语言实现了整个系统的计算机仿真并给出参考设计程序。最后给出在不同的信道条件下,保 护时隙、信道估计方法对OFDM系统误码率影响的比较曲线,得出了较理想的结论。 (O FDM is the key techno logy of 4G in the field of mobile comm unication.In this article O FDM ba sic p rinc ip le is briefly in troduced.Then,the influence of CP and d iffe rent channe l e stim a tion on the system pe rfo rm ance is emp ha tica lly analyzed respectively in Gauss and R ayle igh fading channe ls in the cond ition of ideal synchronization.B e sides,based on the given system mode l O FDM system is compu te r sim u la ted w ith MA TLAB language and the refe rentia l design p rocedure is given.Fina lly,the B ER cu rves of CP and channe l e stim ation a re given and comp ared.The conclusion is sa tisfac to ry. )

图像功率谱密度的快速计算方法，可选择滤波器及运算长度(Image power spectral density of the rapid calculation method to choose the length of filter and computing)

此程序是基于最优控制LQR对倒立摆进行仿真控制，所用平台是matlab(This procedure is based on the LQR optimal control simulation of the inverted pendulum control platform is used by matlab)

我编的用于晶体的J-O 参数，对于稀土分析的研究者很有用啊(crystal series for the J-O parameters for the analysis of rare earth researchers useful ah)

产生随机信号观测样本，不同信噪比和归一化频率。利用基于FFT的自相关函数快速计算方法估计其自相关函数。(Generate random signal observation samples, different signal to noise ratio and normalized frequency.Based on FFT calculation method of the autocorrelation function to quickly estimate the autocorrelation function.)

说明：  本代码用来实现高光谱图像每个波段下灰度图像的保存，并且可将对应图像以相应的波段命名(This code is used to save gray image in each band of hyperspectral image, and the corresponding image can be named in the corresponding band.)