pinghua

QPSK modulation system with recover loops(This is a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. The receiver includes an NDA timing recovery loop followed by a DD phase recovery loop. The transmitter?s symbol period is T and set to a value of 100 ms. The symbol period at the receiver is Tr. The model will produce six windows: Two constellation plots and two eye diagrams (for the real part only), at the output of the matched fi lters and after the recovery loops a plot of the phase error (output of the NCO) and a plot of the fractional timing error (used in the interpolator). The frequency off set at the receiver is denoted by deltaf. The model simulates the transmission of 8000 QPSK symbols.)

本程序可以利用但参数均匀三角多项式曲线来绘制出漂亮的花纹曲线，当然，如果想要获得不同的花纹只需对参数进行调整即可(This procedure can be used but the parameters are homogeneous trigonometric polynomial curve to draw a beautiful pattern curve, of course, if you want to get a different pattern can only adjust the parameters)

《MATLAB程序设计教程》电子教案+源码(MATLAB Programming Tutorial lesson plans+ source code )

实现卡尔曼滤波功能，建立了一个对位置观测的系统，同时加入了速度噪声，完成了Matlab的仿真。(Kalman filtering, established a system of observation position, while adding speed noise, completed the Matlab simulation.)

读入一段数据后，计算有效信号的初至、持时及能量等属性，并作出事件属性判断。(Data into a period of time after the initial calculation of the effective signal to hold the time and energy, such as attributes, and attribute the incident to determine.)

用广义最小二乘法辨识气动实验系统的参数，并采用最终误差预报估计模型阶次(Generalized Least Squares Identification of aerodynamic parameters of experimental system, using the final prediction error of the estimated model order)

MATLAB命令大全。可以帮助广大初学者学习使用matlab。(MATLAB command Daquan. Can help the beginners to learn how to use matlab)

Code implementation of a Multilayer Perceptron that learns the logical XOR function (for 2 and 4 inputs).

录制一段自己的语音信号，并对录制的信号进行采样；画出采样后语音信号的时域波形和频谱图；通过matlab界面进行编程设计，界面方便人们操作( Their record a voice signal, and recording the signal is sampled draw sample after the time-domain waveform and frequency spectrum of the speech signal designed by matlab programming interface, easy for people to interface)

ActiveMQ CPP 使用示例。ActiveMQ 是Apache出品，最流行的，能力强劲的开源消息总线(ActiveMQ CPP example)