MISCELLANEOUS

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)

在MATLAB程序中利用FDATOOL工具得到系数，然后由此十进制系数生成CSD码(In the MATLAB program by using FDATOOL tools coefficient, then the resulting decimal CSD code coefficients generated)

小波神经网络3 一共是3个哦(Wavelet neural network is a total of 3 Oh 3)

最速下降法，优化算法的一种，具有二次收敛性，若目标函数为二次正定函数，经有限步可达到极小点(Steepest descent method, an algorithm with quadratic convergence, if the objective function is quadratic positive definite function can be achieved by the finite step minima)

单纯形方法进行线性规划，得到线性问题的最优解(Simplex method of linear programming, to get the optimal solution of the linear problem)

介绍matlab编程的基本知识，对于初学者来说很有用(matlab programming course )

MIMO TOOLBox Matlab V2.2

本实验要求掌握时域特征分析原理，并利用已学知识，编写程序求解语音信号的短时过零率、短时能量、短时自相关特征，分析实验结果，并能掌握借助时域分析方法所求得的参数分析语音信号的基音周期及共振峰。基于MATLAB的语音信号时域特征分析(In this study, the analysis required to master the principles of time-domain characteristics, and use the learned knowledge to write programs to solve short-time speech signal zero-crossing rate, short-time energy, short-term autocorrelation features, analysis of the experimental results, and can grasp the time domain by means of analytical methods pitch the determined parameter analysis of the speech signal and formant. Based on time-domain characteristics of the speech signal analysis MATLAB)

说明：  信号频谱分析，倍频程算法matlab程序，1/N倍频程(Signal spectrum analysis, octave algorithm matlab program, 1/N octave)

数字散斑相关(DSCM)程序，可以精确算出前后两幅图片的位移，精确到亚像素(Digital speckle correlation (DSCM) program, you can accurately calculate the two pictures before and after the displacement, to the sub-pixel precision)