demo_01

用于求积分，这是用matlab函数编的，非常好用！(Used for points, which is made using matlab function, very handy!)

一个有关OFDM系统信道估计的程序，MATLAB环境(An OFDM system channel estimation procedure, MATLAB environment)

西安交大Malab教学视频，从入门到精通，易于学习，用时少。(Xi' an Jiaotong University Malab teaching video, from the entry to the master, easy to learn, with less time.)

说明：  《自适应信号处理》书中各个章节的matlab仿真的源程序！对于学习自适应信号处理的非常有用！("adaptive signal processing" all the chapters of the book Matlab simulation of the source! Learning adaptive signal processing is very useful!)

说明：  带瑞丽衰落信道高斯白噪声的QPSK调制解调信道，可以得到功率谱波形和星座图(with Ruili fading channel Gaussian white noise QPSK demodulator access that can be power spectrum waveform and constellation)

Data Encryption by Matrix Multiplication We will only use numbers 0 to 26 for the encryptive mathematics operation. Numbers from 1 to 26 are for letters from A to Z and 0 is for all non-letter characters. To minimize usage of numbers, all letters are converted to upper case. The original message is converted to number array according to the ASCII table and minus 64. We partition whole array into blocks of 8 numbers. The last block may be added several zeros. Then multiply each block by the an 8x8 matrix A which is invertible in Z27 to get cipher data. The decryption is the same process except to use its inverse matrix B. For good visual reading, we convert all non-letter characters to under score for the decryption.

利用Matlab软件编写的轨道不平顺数据分析程序能够对轨检车测得的不平顺数据进行处理,得到功率谱密度分布函数.轨道不平顺分析程序包括轨道不平顺数据预处理、轨道不平顺谱分布函数计算以及根据实测的车体振动加速度,对轨道不平顺与车体振动加速度进行相干分析、提出对行车运行有不利影响的不平顺波长范围等.研究结果表明:车辆的动力特性与轨道不平顺有密切关系.高低不平顺对车体垂向振动影响显著,轨向不平顺对车体水平振动影响显著,水平不平顺对列车垂向、横向振动均有显著影响.(Matlab software written track irregularity data analysis program able to track inspection car irregularity measured data are processed to obtain the power spectral density function. Track Irregularities track irregularity analysis procedures including data preprocessing, track irregularity spectrum distribution function calculations, and based on the measured vibration acceleration of the vehicle, with the body of track irregularity acceleration coherent analysis, have an adverse impact on traffic running irregularity wavelength range, etc. the results show that: the dynamic characteristics of the vehicle and the track irregularity closely related. rough along the vertical vibration of the vehicle significantly, rail irregularity vibration to levels significantly affect the body, the level of irregularity to train the vertical and horizontal vibration significantly affected.)

MATLAB Simulation of OFDM System (MATLAB Simulation of OFDM System)

MATLAB智能算法案例分析+源代码，共30个，可以满足一些常用的需求，供大家学习与交流(MATLAB intelligent algorithm Case+ source code, a total of 30, to meet the demand for them to learn and exchange)

单模多项式矩阵的分解算法，支持符号运算，用matlab实现了smith算法(Polynomial matrix of single-mode decomposition algorithm, to support the symbolic operation, using matlab algorithm achieved smith)