shanchen

波束形成结合准正交空时编码编码4天线系统，附有仿真图(Beamforming combined with quasi-orthogonal space-time coding coding 4 antenna system, with simulation of Figure)

MATLAB7.0做得一个科学型计算器，功能齐全，欢迎大家一起下载学习。有不足的地方欢迎大家指出。(MATLAB7.0 done a scientific calculator, full-featured, with everyone welcome to download the study. There are deficiencies welcome that.)

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说明：  GSM 目前还是现在主要应用的移动系统，2G的演进也是目前平稳向三代过度的重要途径，MUROS，EDGE等都是现在技术演进的关键技术，本代码给出了平台搭建中TCH信道编解码技术，希望对你有所帮助。(GSM is still the main application is mobile systems, 2G is the steady evolution over the three generations of an important way, MUROS, EDGE technology are now the key to the evolution of technology, the code structures are given a platform in the TCH channel codec technology, want to help you.)

约170勘探地震资料和测井资料的分析和显示功能（加上他们所谓的支持功能）的设置。这些功能读取和写入标准的SEG - Y格式的地震数据，读取和写入测井在LAS格式2.0（也读3.0 LAS格式），并执行许多通常对这些数据类型进行的操作。他们使用标准化的结构来表示地震数据和测井数据，从而使函数调用的简单串联。(A set of about 170 functions (plus support functions called by them) for analysis and display of exploration-seismic data and well logs. These functions read and write seismic data in standard SEG-Y format, read and write well logs in LAS-format 2.0 (also read LAS-format 3.0), and perform many of the manipulations usually performed on these data types. They use standardized structures to represent seismic data and well data and thus allow simple concatenation of function calls.)

资料中介绍了几种经典信噪比估计算法的编码并进行比较，包括误差矢量幅值法、最大似然估计、迭代法以及奇异值分解法。(Data introduces several classical coding SNR estimation algorithm and compared, including error vector magnitude, maximum likelihood estimation, iterative method and singular value decomposition.)

matlab 自己学习的,可以提高matlab编程(matlab,impove your matlab ability)

说明：  一个用来计算一维光子晶体全息干涉分布的程序，很好用的！(Used to calculate a one-dimensional photonic crystal holographic interferometry distribution procedures, very good use!)

说明：  一篇有关机动目标跟踪时动态模型建立方法的外文文献(A maneuvering target tracking on Dynamic Modeling Methods Foreign Languages ​ ​ and Literatures)

First use EEMD to decompose the original singal to get IMFS,then use FFT to analyse the each IMF,combine EEMD with FFT to get clearer analytic results.