ddc_v1_sg81_060405

this a Master thesis entitles: Design of WiMAX simulator at PHY layer, en french language

time-invariant degradation models and stationary signals and noise, the classical Fourier domain Wiener filter, which can be implemented in O(N logN) time, gives the minimum mean-square-error estimate of the original undistorted signal. For time-varying degradations and nonstationary processes, however, the optimal linear estimate requires O(N2) time for implementation. We consider filtering in fractional Fourier domains, which enables significant reduction of the error compared with ordinary Fourier domain filtering for certain types of degradation and noise (especially of chirped nature), while requiring only O(N logN) implementation time. Thus, improved performance is achieved at no additional cost. Expressions for the optimal filter functions in fractional domains are derived, and several illustrative examples are given in which significant reduction of the error (by a factor of 50) is obtained.

非参数的功率谱估计包括四个，周期图法，Blackman-Turkey,Welch-Bartell,改进的周期图法，输入信号为白噪声通过切比雪夫滤波后的信号(Non-parametric estimation of the power spectrum consists of four, periodogram, Blackman-Turkey, Welch-Bartell, improved cycle diagram method, the input signal is white noise ratio of the signal by cutting Schiff filtered)

国外著名控制专著《extremum seeking control and application》输出跟踪控制案例源码，采用matlab编写，对研究极值搜索控制理论非常有帮助(a well-known book about system control 《extremum seeking control and application》output tracking control matlab code, it will benefit to study the extremum seeking control theory for people)

是用Matlab求得自相关函数的源代码，对刚接触自相关互相关方面的同学有很大帮助！(Is the autocorrelation function obtained using Matlab source code for the new to the inter-related aspects of the autocorrelation of great help to the students!)

说明：  循环理论相关MATLAB源代码：高斯信号的产生及画图(Cyclostationary related)

Breiman的bagging算法，是bootstrap aggregating的缩写，是最早的Ensemble算法之一，它也是最直接容易实现，又有着另人惊讶的好效果的算法之一。(Breiman’s bagging, short for bootstrap aggregating, is one of the earliest ensemble based algorithms.)

3 level NPC inverter (SPWM)

这是一个虹膜识别检测的使能控制程序，这是一个很完整的程序(This is a test of iris recognition to control the process so that it is a very complete program)

单相Boost升压结构的有源功率因数校正电路仿真设计实例(The structure of single-phase Boost Boost Active Power Factor Correction Circuit Simulation Design Example)