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Cellular Authentication for Mobile and Internet Services introduces the reader into the field of secure communication for mobile applications, including secure web browsing with a phone or PC, Single Sign-On (SSO), mobile broadcast content protection, secure location services, etc. The book discusses the Generic Authentication Architecture (GAA) of the mobile standardization body 3rd Generation Partnership Project (3GPP) and its American counterpart 3GPP2 in full detail and with all variants. It explains the usage of GAA by various standardization bodies and standardized applications, and also looks at a number of non-standardized ones, such as secure remote login to enterprise environment and card personalization.

说明：  噪声中正弦信号的现代法频谱分析，分析了自相关法、Burg法、协方差法和改进的协方差法对功率谱的影响以及阶数、信噪比、窗长度对自相关法频谱分析的影响。(The influence of autocorrelation method, Burg method, covariance method and improved covariance method on power spectrum and the influence of order, signal-to-noise ratio and window length on the spectrum analysis of sinusoidal signal in noise are analyzed.)

说明：  光伏模块模型，使用BOOST升压电路，稳定运行，结果基本正确！！！(simulink PV model Photovoltaic module model, using boost boost circuit, stable operation, the results are basically correct!!)

图像中值滤波，利用中值滤波和低通滤波进行比较，分析PSNR，得出性能差别(image filtering, using median filter and a low-pass filter, PSNR analysis, the performance differences come)

用于解决二次规划问题。是《精于matlab最优化计算》一书中的源代码，希望有用。(Quadratic programming)

本文介绍了四种经典的功率谱估计法，并配以对应的matlab程序。为初学者很好的材料。(This article describes four classic power spectrum estimation, and with the corresponding matlab program. Very good material for beginners.)

Alan Variance Calculation

小波包变换可以对高频部分提供更精细的分解，而且这种分解既无冗余，也无疏漏，所以对包含大量中、高频信息的信号能够进行更好的时频局部化分析。(Wavelet packet transform can provide the high frequency part of the finer decomposition, and this decomposition is neither redundant nor oversight, so the signal contains a large amount of high frequency information can be a better time-frequency localization analysis.)

数字信号处理的基本理论与方法，有助于初学者更好的学习！(Digital signal processing of the basic theories and methods to help beginners learn better!)

MUSIC算法，可以降噪，提高分辨率，用于图像质量提高(MUSIC algorithm, noise reduction, improved resolution for improved picture quality)