IEEE34-with-wind

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.

this is circuit detection

经典的短波信道模拟程序——wattson模型，比较好用，适当设置参数(Classic short-wave channel simulation program- wattson model, easy to use, the appropriate parameter settings)

MATLAB中FFT的使用方法 调用FFT的函数直接通过MATLAB实现(To use MATLAB in FFT FFT of the function calls directly through MATLAB Implementation)

在无线通信中，存在着严重的多径现象，能够引起严重的ISI。判决反馈均衡器（DFE）是目前最常用的一种消除ISI的均衡器。本程序使用Matlab实现的QPSK下的DFE。(In wireless communication, there is a serious multi-path phenomenon, can cause severe ISI. Decision feedback equalizer (DFE) is the most commonly used in an equalizer to eliminate the ISI. This procedure using Matlab under QPSK realize the DFE.)

说明：  利用Matlab软件平台对JTC进行了图像识别仿真实验，得到了二维及三维相关输出图像，显示出尖锐的相关峰。仿真实验表明：联合变换进行图像识别中存在强烈的零级干扰，干扰信号是有用信号的7.14倍，输出结果不理想；采用功率谱相减法可以消除零级强干扰，进而提高了图像的识别能力。(Simulations of joint transform correlator (JTC) using Matlab is implemented, and the 2-D and 3-D drawings of the correlation image are obtained. In the simulation experiments, the sharper correlation peaks are showed. The result shows that strong disturbance of zero rank exists in the simulation of JTC, and it is 7.14 times stronger than the useful signal thus, the power spectrum subtraction is used to eliminate the strong disturbance, and the capacity of image recognition is improved.)

Steerable高斯图像滤波器，非常不错 在国外网站上找到的，可以学习 (Steerable Gaussian filter images, very good abroad found on the site, we can learn from)

ActiveMQ学习文档,参考书籍,很有用的书籍(ActiveMQ study documents, reference books, useful books)

WalshHadmard code for CDMA system..

随机森林算法是一个可用于数据分类和显现回归的一个相当不错的算法，可实现很多功能。这个算法只需要将所需文件放入一个matlab路径中即可实现(A pretty good random forests algorithm is an algorithm for data classification and regression show, can achieve a lot of functionality. This algorithm only to the desired file into a matlab path can be realized)