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在DOA估计中，实际测量和理论肯定存在误差，比如通道误差，阵元位置误差，我们提出一种toplitz的预校正方法。(In the DOA estimate, the actual measurement and theory certainly exist errors, such as channel error, array (position errors, we put forward a kind of toplitz or calibration methods. )

利用iTextsharp提取PDF文件中图片的控制台程序源码，根据原itextsharp.ExtractImagesFromPDF改进(This is a pick image console program, You can use pdf command to pick a image PDF file. )

计算光子晶体光纤的有效折射率程序，可以得到有效折射率随波长变化图(Calculate the effective refractive index of the photonic crystal fiber program, you can get change in the effective refractive index with wavelength)

关于高斯光束衍射的程序，可加强对其的理解。包括多种衍射(Application of gaussian beam diffraction, can strengthen the understanding of it. Including a variety of diffraction)

说明：  8. 单径瑞利信道中的四发四收V-BLAST： (1) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量16QAM调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线。 (4 Explain the working principle of convolutional encoding and decoding. Please use the Simulink simulation convolutional coding and Viterbi decoding method used to decode, in which the encoding, decoding all 8 single-path Rayleigh channel of the four rounds of four closed V-BLAST: (1) Please design a specific The guide-assisted channel estimation method, using Simulink for simulation, measurement 16QAM modulation bit error rate performance. Draw-bit signal to noise ratio and channel estimation mean square error curve, draw-bit signal to noise ratio and bit error rate curve.)

describe the Photovoltaic system with PI controller

This is a Swarm BAT Algorithm.

说明：  基于MATLAB语言的OFDM（正交频分复用）技术仿真，考虑到了信道衰落和干扰因素，完全原创。(OFDM (orthogonal frequency division multiplexing) technology simulation based on Matlab, taking into account the channel fading and interference factors, entirely original.)

利用matlab语言进行模型建立，包括GMM、HMM 等(set up models with matlab language ,the models contain GMM and HMM)

the code is about ML detector of mimo technology ,,,,we need of vhdl code for all detectors