cheliangjiance

模拟数字基带系统在matlab下的实现，包括输入输出信号的码型，功率谱密度，眼图及误码率(Analog-to-digital base-band system in the realization of matlab, including the code input and output signal type, the power spectral density, eye diagram and bit error rate)

in this folder contains the import the picture and how to find the effects. how to read the image and how to show the images.

用MATLAB设计的四种FIR滤波器，每行代码都有详细的解释，适合于初学者学习用。(The fir filter designed with MATLAB ，each line of code has a detailed explanation, suitable for beginners to learn.)

QAM调制的ＭＡＴＬＡＢ程序仿真，思路清晰，既可以学习如何用ＭＡＴＬＡＢ编程，又可以理解通信调制技术！(QAM MATLAB simulation procedures, clear thinking, can learn how to use MATLAB programming, but also to understand communication modulation technology!)

最新cdf工具箱，可在matlab中读取cdf文件，有详细word说明。(The latest cdf toolbox, in matlab read cdf file detailed word description.)

image hiding introduction procedure

STD法模态参数识别，可识别频率，阻尼比和振型系数。(STD method modal parameter identification)

在结构动力学中，动力方程分析的newmark方法。(A newmark method for analysis of dyanimic equation)

奇异值分解用于英文文本检索，画出频率矩阵第一奇异值向量和第二奇异值向量的分布图( a fast retrieval algorithm for English texts is proposed. First of all, the English texts are mapped into frequency matrixes of order 26 and the dimensions of texts representation space are reduced through Singular Value Decomposition. Second, it fuses the features of the first singular value component and the second one, and then gets the complex feature vectors which reflect not only the statistic frequency but also the sequential structure of letters. )

PADE降阶MATlab程序 降阶后的分子分母次数可以随意的给定(PADE reduction MATlab numerator and denominator after reduction procedure can be arbitrary given the number of)