QRStiqu

高阶谱分析工具箱，强烈推荐，共计58个函数，实现了高阶谱估计的几乎全部功能。本人在这里上传的文件，仅仅为了学术交流。希望大家都有机会掌握高阶谱估计。互相切磋，共同进步！(higher order spectral analysis toolkit, strongly recommend, for a total of 58 functions, to achieve the high-end of the spectrum is estimated that almost all functions. Here, I would upload documents, only to academic exchanges. Hope we have the opportunity to acquire higher-order spectrum estimation. Peers common progress!)

Simulation of BPSK modulation

介绍了matlab的命令大全，以及相关的matlab的应用(Introduced the matlab command Daquan, and related applications matlab)

genetic algortm for optimation

Application of spread spectrum for satellite land mobile systems is difficult in satellite link because of synchronization and providing code or considerable Doppler shift. This is particularly high for LEO satellites. So that, a Doppler shift carrying a frequency in band S can reach to several tens of kHz. To estimate and compensate Doppler, a CW pilot carrier is used. The aim of this study is simulate Doppler frequency estimation using MIMO-OFDM technique. Finally, the proposed algorithm is compared to MMSE algorithm in order to insure its performance.

利用matlab软件对PID参数进行多种方式的调节整定(Using matlab software PID parameter tuning adjustment of a variety of ways)

Blasius Equation for Boundary layer theory problems. For calculating the boundary layer thickness and the velocity profile in a free stream in a pipe.

matlab实现的无约束修正Newton法，内含一维搜索进退法和0.618法，验证函数选择的booth函数，实验结果符合。(matlab achieve unconstrained correction Newton method, contains one-dimensional search method retreat and 0.618 method, verify booth function function selected experimental results.)

LDPC码是通过校验矩阵定义的一类线性码，为使译码可行，在码长较长时需要校验矩阵满足“稀疏性”，即校验矩阵中1的密度比较低，也就是要求校验矩阵中1的个数远小于0的个数，并且码长越长，密度就要越低。 (LDPC Coding with PSK modulation in Rayleigh fading channel Most of the functions are built in matlab functions found in the comm. toolbox. These can also be easily configurable in the code to meet your requirements. In the given code, set the SNR, codeRate, modulation order (psk) and Number of frames to be simulated. Please feel free to contact me and let me know your comments. )

利用MATLAB对图像进行分解为高频和低频部分，在重构得到图像的高低频部分并显示出来(MATLAB decomposed into high-frequency and low-frequency part of the image, the high-low-frequency part of the image in the reconstruction and display.)