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RF AND MICROWAVE POWER AMPLIFIER DESIGN NONLINEAR ACTIVE DEVICE MODELING Power MOSFETs GaAs MESFETs and HEMTs BJTs and HBTs

A Hybrid Orthogonal Frequency Division Multiplexing & Code-Division Multiple-Access (OFDM-CDMA) This is a simulation program for uncoded OFDM-CDMA system with QPSK modulation and Complex channel modelled by Rayleigh fading. The program is modified based on Iterative chip-by-chip multi-user detection has been adopted in this simulation

libsvm支持向量机，用于识别分类。本程序成功用于虹膜识别的研究。是嵌入matlab的C程序(libsvm support vector machine, used to identify classification. The success of this procedure for iris recognition research. Is embedded in the C program matlab)

说明：  变量选择方法的代码，本人经编写验证正确而的代码，欢迎使用(Variable selection method code, I verify the correct and by writing code, Welcome)

说明：  冈萨雷斯数字图像处理源代码，与课本例子直接关联，是数字图像处理的基础(Gonzalez Digital Image Processing source code, directly associated with the textbook example is based on digital image processing)

这是大学毕业时设计的失真度检测仪论文，由模拟陷波器实现的剔除几波，如果改进的话，可以用数字滤波器实现，不过成本更高(It is designed for university graduation thesis distortion detector by analog notch filter removed to achieve a few waves, if improved, you can use digital filters to achieve, but higher costs)

卷积码（2,1,7）编码和4比特电平量化(（2,1,7）encoder)

一个相当好用的matlab函数，由美国国家可再生能源实验室科研人员设计，可以计算太阳的直射维度和方位角。只要输入时间、观测地点即可。 (This algorithm is based on numerical approximation of the exact equations. The authors of the original paper state that this algorithm should be precise at+/- 0.0003 degrees. I have compared it to NOAA solar table (http://www.srrb.noaa.gov/highlights/sunrise/azel.html) and to USNO solar table (http://aa.usno.navy.mil/data/docs/AltAz.html) and found very good correspondance (up to the precision of those tables), except for large zenith angle, where the refraction by the atmosphere is significant (difference of about 1 degree). Note that in this code the correction for refraction in the atmosphere as been implemented for a temperature of 10C (283 kelvins) and a pressure of 1010 mbar. See the subfunction un_topocentric_zenith_angle_calculation� for a possible modification to explicitely model the effect of temperature and pressure as describe in Reda & Andreas (2003). )

美国莱斯大学压缩感知稀疏学习工具箱，能把信号进行稀疏表示，进而实现远低于奈奎斯特抽样速率的压缩感知(Rice University study Toolbox sparse compressed sensing, sparse representation of the signal can, thus achieving much lower than the Nyquist sampling rate of the compressed sensing)

各方调制方式，例如bpsk、qam、fak等，在高斯白噪信道下误码对比结果(MATLAB awgn)