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摘　要:根据HFC网络上行信道的特性,建立了信道模型 分析了上行信道中存在的各种噪声对QPSK 调制技术的影响。结果表明在C /N (传输信道载噪比)较低的情况下,采用QPSK调制方式,可以提高系 统的抗干扰能力。 关键词: QPSK 光纤同轴电缆混合网 上行信道 噪声(Abstract: HFC network in accordance with the characteristics of the uplink channel, the establishment of a channel model an analysis of the various uplink channel noise on the impact of QPSK modulation. The results show that the C/N (transmission channel carrier-to-noise ratio) lower, the use of QPSK modulation, can improve the system of anti-interference ability. Keywords: QPSK hybrid fiber coaxial cable network uplink channel noise)

简单的OFDM仿真，采用QPSK调制，有串并转换，保护间隔，fft/ifft等(Simple OFDM simulation using QPSK modulation, there are serial to parallel conversion, guard interval, fft/ifft etc.)

CT迭代算法,简单易用，运行一个M文件即可，有说明书； 测试数据程序生成； 含投影数据成成，投影矩阵生成等。 ART/CT/MART/SIRT/ 感谢我师兄，为我师兄原创！！(Previously provided by the source, a lot of people will not react with, and contact me, So I put it into an m file, so you can simply run this file you can see how CT iterative algorithm works: Package scratch: Get projection data, how to score, how to get inside the projection matrix so After downloading want to learn I again thank my brother, my brother left behind once the program in this study available to everyone* 1 if we want to thank to thank my brothers thank you! ART SIRT MART CT)

说明：  matlab实现惯导数据的初步解算，能够得到位置、角度等的误差分析(Matlab realizes the initial solution of inertial navigation data)

非常好的MATLAB学习书籍，非常值得下载，一定能对用户有很大帮助。 此书为MATLAB微分方程求解。(MATLAB to learn a very good book, well worth downloading certainly of great help to users. This book for MATLAB to solve differential equations.)

说明：  MATLAB7辅助控制系统设计与仿真 书中的原码 第3章(MATLAB7 assisted control system design and simulation of the original code book, Chapter 3)

16QAM的调制解调，基带星座图，调制解调之后星座图及比较(16QAM modem, baseband constellation map, after the modem constellation diagram and compare)

不用自带直方图函数画直方图以及直方图均衡处理图像(Don t bring histogram function painting histogram and histogram equalization images)

what is kalman filter ?

指纹识别的一套完整成，还有指纹图像。绝对有用，适合毕业设计研究(Into a complete fingerprint recognition, as well as the fingerprint image. Definitely useful for the design of graduation)