Unit1

this is matlab code about 802.11b PHY.DBPSK

人脸识别源码matlab，十分有效，精度达到90 (Face recognition matlab source)

matlab的DDS仿真，用寻址法获得相关输出频率的正余弦函数以及任意初相的正弦(Matlab the DDS simulation, addressing law related output frequency of the cosine function and an arbitrary initial phase sine)

牛顿-拉夫逊法在数学上是求解非线性代数方程组的有效方法，其要点是把非线性方程求解过程变成反复地对相应的线性方程进行求解的过程。(Newton- Raphson method in mathematics is an effective method for solving nonlinear algebraic equations, the point is that the non-linear equation solving process into the process repeated for the corresponding linear equation solving.)

说明：  可以方便地进行1,2范数的优化计算。具体针对稀疏恢复问题，最小二乘问题，约束优化问题的求解等。(It is convenient to optimize the calculation of 1,2 norms. Specifically for sparse recovery problem, least squares problem, constrained optimization problem and so on.)

Alamouti编码的编解码仿真实现，对初学STBC编码有较大的帮助(Alamouti encoding codec simulation of STBC coding beginner greater help)

小型矩量法解决天线散射问题，在matlab环境下运行。(Small antenna scattering method of moments to solve the problem, run the matlab environment.)

通过步进电机的数学模型对二相步进电机进行仿真，并通过卡尔曼滤波处理数据，最终通过处理后的数据预估两相步进电机的相电流和相电压。(The mathematical model of the stepping motor is used to simulate the two-phase stepping motor, and the data are processed by Kalman filter. Finally, the phase current and phase voltage of the two-phase stepping motor are predicted by the processed data.)

matlab实用程序100例，都是些小程序，可以用来熟悉matlab的一些常识(matlab utility 100 cases, are some small programs that can be used to know some of the knowledge of matlab)

说明：  本书是学习数值方法最新版本matlab实现的好帮手，详细而全的讲解及实现为自学matlab是一本不错的书籍。(This book is the latest version of matlab numerical methods to learn to achieve a good helper, detailed and full realization of the self-presentation as well as matlab is a good book.)