t_up_down

calculate the band of Fabry-Parot Filter (A Fabry-Parot Filter consist of the cavity formed by two highly reflective mirrors placed parallel to each other , as shown in the figure 1.The input light beam to the filter enters the first mirror at right angles to its surface. The output of the filter is the light beam leaving the second mirror. This filter is called Fabry-Parot or etalon. This is a classical device that has been used widely in interferometric applications. Fabry-Parot filters have been used for WDM in several optical network test beds. There are better filters today, such as thin film resonant multi cavity filter and they can still be viewed as Fabry-Perot filter. This type of filter transmits a narrow band of wavelengths and rejects wavelengths outside of that band. An interesting feature of this type of filter is its ability to "select" a different peak wavelength as the filter is tilted)

antenna array factor

matlab指令大全，基础学习必然会用得着(the matlab instruction Daquan, the basis of learning will certainly need it)

这是用SIMULINK的S-FUNCTION方式编写的系统仿真代码，系统是基于4G网络的核心技术空时分组编码的MIMO-OFDM通信系统的，涉及到空间分集、时间分集和频率分集的有机结合，包括QPSK调制解调、IFFT调制、控制编解码、基于训练符号的信道估计等通信模块。包括main_STBC_MIMO_OFDM和training_symbol两个M文件和一个DOC文件，对各部分的都有详细的代码和注释。(It is used SIMULINK the S-FUNCTION approach to the preparation of the system simulation code, the system is based on the 4G network s core technology space-time block coded MIMO-OFDM communication system, involving spatial diversity, time diversity and frequency diversity of the organic combination, including QPSK modulation and demodulation, IFFT modulation, control of encoding and decoding, symbol-based channel estimation training and other communication module. Including main_STBC_MIMO_OFDM and training_symbol two M file and a DOC file, have detailed the various parts of the code and comments. )

this code is very good for PCASOM

说明：  认知超宽带的系统设计方面的文章，在权威刊物IEEE上发表的文章，对CUWB有研究的学者有巨大帮助(Cognitive UWB system design aspects of an article published in IEEE which is an authoritative publication.It would bring the tremendous assistance to the related researchers.)

a book of Benenti about quantum information

ARMA模型的功率谱估计，程序简单易懂，免费下载。(spectral estimation)

永磁同步电动机反推速度控制，很不错，控制效果很好(Backstepping speed permanent magnet synchronous motor control, very good)

金融工程嗯, 从matlab论坛上下载的，我觉得很有用，所以传上来分享(Financial Engineering derivatives from famous University and is really useful in derivatives. I love it very much and I think is really helpful to your guys)