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Quadrature amplitude modulation (QAM) is a modulation scheme in which two sinusoidal carriers, one exactly 90 degrees out of phase with respect to the other, are used to transmit data over a given physical channel. One signal is called the I signal, and the other is called the Q signal. Because the orthogonal carriers occupy the same frequency band and differ by a 90 degree phase shift, each can be modulated independently, transmitted over the same frequency band, and separated by demodulation at the receiver. For a given available bandwidth, QAM enables data transmission at twice the rate of standard pulse amplitude modulation (PAM) without any degradation in the bit error ratio (BER).

说明：  航天器动力学中用于计算E角各种方法MATLAB程序，包括迭代法，几何法等等(Spacecraft Dynamics various methods used to calculate the angle E MATLAB program, including the iterative method, geometric method, etc.)

说明：  Matlab从入门到精通中所有的源程序。(Matlab from entry to master all of the source.)

说明：  求解大规模对称矩阵的CG算法，及预处理PCG使用Matlab语言，可以解1000阶以上的矩阵，以病态矩阵hilbert为例(Solving large-scale symmetric matrix of the CG algorithm, and pretreatment of PCG using Matlab language, you can order more than 1,000 solution matrix, as an example to pathological matrix hilbert)

a MATLAB GUI platform for determination and evaluation of biologically significant motifs

Modeling and control of hybrid renewable energy systems PV/Wind...

A Matlab toolbox to simulate light propagation for monochromatic coherent light through free-form apertures and off rough/free-form surfaces by means of a numerical approximation of the Huygens-Fresnel integral.

本书基于MATLAB 5.2版，提供了使用MATLAB的实践性指导。MATLAB已成为适合多学科、多种工作平台的功能强大、界面友好、语言自然并且开放性强的大型优秀应用软件，同时也已成为国内外高等院校高等数学、数值分析、数字信号处理、自动控制理论以及工程应用等课程的基本教学工具。本书按逻辑编排，自始至终用实例描述；内容完整且每章相对独立；是一本简明的MATLAB参考书，既适用于初学者，也适用于高级MATLAB用户。对MATLAB与FORTRAN、C等语言结合的描述更是所有MATLAB书籍中少有的一大特色。 本书适合作为理工科高等院校研究生、本科生教学用书，也可作为广大科研工程技术人员的自学用书。

电压型单相全桥逆变器的simulink仿真模型(Simulink simulation model of voltage type single-phase full-bridge inverter)

Gaussiennes, Gaussienne standard and Lognormal型随机变量的数值模拟(Gaussiennes, Gaussienne standard and Lognormal type of numerical simulation of random variables)