exc0501

Quantization of signal, mid-tread and mid-rise

Ising model 2D simulation

有关迭代法和插值法的程序。包括高斯赛德尔迭代法、牛顿迭代法、拉格朗日插值法、牛顿插值法等。(Programs about iterative and interpolation method,including Gauss-Siedel ,Newton iterative method, Lagrange and Newton interpolation method.)

说明：  若非奇异矩阵A能够分解为一个正交矩阵Q与非奇异上三角矩阵R的乘积，即： A=QR。则称其为A的QR分解。 实现QR分解的方法有很多种，包括Givens变换法，Householder变换法，Schemit正交化法。具体原理可以参考《矩阵论》（程云鹏，西工大出版）教材，这里仅给出三种实现QR分解的程序。(If nonsingular matrix A can be decomposed into a product of orthogonal matrix Q and nonsingular upper triangular matrix R, that is: A=QR. It is called QR decomposition of A. There are many methods to realize QR decomposition, including givens transformation, householder transformation, and scheme orthogonalization. The specific principle can refer to the teaching materials of matrix theory (Cheng Yunpeng, published by Xigong University). Here, only three kinds of QR decomposition procedures are given.)

A system simulation environment in Matlab/Simulink of RFID is constructed in this paper. Special attention is emphasized on the analog/RF circuit.Negative effects are concerned in the system model,such as phase noise of the local oscillator,TX-RX coupling,reflection of the environment, AWGN noise,DC offset,I/Q mismatch,etc.Performance of the whole system can be evaluated by changing the coding method,parameters of building blocks,and operation distance.Finally,some simulation results are presented in this paper.

computes the coherence in hanning windows

说明：  对标准卡尔曼滤波方法中野值对其滤波精度的影响，提出了基于M估计的野值 处理方法。这种方法不仅可以去除单个野值的影响，而且在野值成片出现时还能很好地保持滤波 稳定性。通过仿真验证了该方法的有效性。(Their filtering accuracy on the standard Kalman filtering method outliers, outliers based on M-estimation approach. This method can not only remove the impact of individual outliers, and opposition values ​ ​ into the film appears to keep the filter can be very stability. The effectiveness of the method is verified by simulation.)

Machine Learning, Neural and Statistical Classification Editors: D. Michie, D.J. Spiegelhalter, C.C. Taylor February 17, 1994

Ball on Beam Controller Matlab m.file and simulink.(1)

图像的加密解密MATLAB源码，包含lena的测试图像及加密解密图像。( Image encryption and decryption of the source, including the test images lena and image encryption and decryption.)