diedai

讲述4G通信OFDM技术理，介绍了该技术的基本原理，信道估计原理，同步原理以及峰均比抑制技术。(About 4G OFDM technology communication manager, describes the basic principles of the technology, channel estimation theory, the synchronization principle and PAPR reduction techniques.)

Photonic crystals are attractive optical materials for controlling and manipulating the flow of light. One dimensional photonic crystals are already in widespread use in the form of thin-film optics with applications ranging from low and high reflection coatings on lenses and mirrors to colour changing paints and inks. Higher dimensional photonic crystals are of great interest for both fundamental and applied research, and the two dimensional ones are beginning to find commercial applications. The first commercial products involving two-dimensionally periodic photonic crystals are already available in the form of photonic-crystal fibers, which use a microscale structure to confine light with radically different characteristics compared to conventional optical fiber for applications in nonlinear devices and guiding exotic wavelengths. The three-dimensional counterparts are still far from commercialization but may offer additional features such as optical nonlinearity require

采用四阶龙格库塔法计算姿态、速度和位置信息(Using fourth-order Runge-Kutta method to calculate attitude, velocity and position information)

code for extraction video histogram

描述的是两个振动信号的合成，注意采样点数、间隔、频率、振幅、初始相位的不同而带来的变化(Described in the synthesis of the two vibration signal, alert the sampling points, the interval, frequency, amplitude, an initial phase of the type of changes brought)

说明：  三弯矩插值法 lagrange多项式插值 多项式最小二乘法 龙贝格积分法 分段线性插值 三转角插值 这些是数值分析中常用的集中经典方法，运用matlab展示出来！(three polynomial interpolation Hangzhou least squares polynomial interpolation Romberg integration subparagraph Line sex angle interpolation three interpolation these numerical analysis is commonly used in concentrated classical methods, and use Matlab show!)

在matlab界面中显示坐标曲线，运用matlab中guide的axes控件编程。(In matlab interface to display the coordinates curves guide the use of axes in matlab programming controls.)

MWMP是一个运行MATLAB下面的多小波软件包，它是目前功能比较全面的一个多小波软件包，能够用于科学研究例如图像压缩、信号降噪等。它提供了一些比较常见的单小波与多小波滤波器，也提供了多小波的一些常用的预滤波算法，并且，只要修改coef.m文件，就可增加新的滤波器组，同时，修改文件coef_prep.m文件，可增加新的预滤波方法。(MWMP is the following one to run MATLAB package of multi-wavelet, which is currently the more comprehensive package of more than one wavelet can be used for scientific research such as image compression, signal noise reduction. It provides some of the more common single-wavelet and multiwavelet filters, also provides some of the commonly used multi-wavelet pre-filtering algorithm, and, as long as the changes coef.m file, you can add a new filter at the same time, modify the file coef_prep.m file, increase the new pre-filtering method.)

说明：  直流双闭环调速系统，给定电机参数，仿真结果基本预期结果(DC Double Closed Loop Speed Regulation System)

说明：  matlab高效编程程序第十章，可以运行。(Chapter matlab programming procedure efficient, you can run.)