ofdmtransmission

高速铁路路基沉降是一个复杂的系统过程,涉及不同时期、不同工况,选用单一的预测模型不足以反映路基整体的变形规律.Logistic模型及Verhulst模型的曲线均为S形,可以反映全过程的地基沉降与时间的关系.针对路基填筑期和降水期两个时段利用MATLAB软件编制程序计算模型参数,得到Logistic模型和灰色Verhulst模型,进而求得两者的最优加权组合模型.对比结果表明:在路基填筑期由两者的最优加权组合模型预测得到的结果与实测结果较吻合,拟合精度高于单一模型 而在降水期Verhulst模型的预测值更接近实测值,平均相对误差约为1.75％,拟合精度较高.(High-speed railway subgrade settlement process is a complex system involving different times and in different conditions, the choice of a single forecasting model does not adequately reflect the overall deformation of roadbed. Curve Logistic model and Verhulst models are S-shaped, the whole process can be reflected foundation settlement versus time. against roadbed construction period of two hours and precipitation using MATLAB software programming model parameters, the Logistic model and gray Verhulst model, and then get the optimal model of a weighted combination of the two. comparative results indicate : results and experimental results in the roadbed construction period by the weighted combination of the best of both models predicted than the anastomosis fitting accuracy than a single model precipitation predicted value of Verhulst model closer to the actual value of the average relative error approximately 1.75 fitting accuracy.)

the file contains detection and estimation theroy codes

采用自适应波束形成技术，获得想得到的方向图。(Adaptive beamforming technology, access to the desired pattern.)

DTFT的实现 适用于初学者的适用于初学者的适用于初学者的(Implementation of DTFT)

huffmann coding. needs motion vectors(x,y,prob) from motion estimation. the code also contains tree implementation

color image rgb conversion

Objective of this example is to demonstrate how to design and model adaptive controller, tune and analyse its performance using Simulink® . For this example we have used direct adaptive method called Model Reference Adaptive Controller (MRAC). There are three main elements of this model: Reference Model, Plant Model and Adaptive Controller. Each element and its working is explained in "Adaptive Controller Example.pdf", part of attached folder.

本书把MATLAB 当作一种技术编程语言来教，向学生展示如何编写简洁高效，有充分根据的程序。(The book as a technique to MATLAB programming language to teach, to show students how to write a simple and efficient, there is a sufficient basis for the program.)

很好很强大 (GOOD)

利用长除法，产生平衡GOLD序列码，扩频方面的内容(Using long division, resulting in a balance GOLD serial number, spread spectrum aspects)