Blatt7

FOR HELP AND DOCUMENT FOR POWER DCXXX

 利用fft()进行快速傅立叶变换，得到频谱，画出正弦函数及其频谱  找出频谱中使得Y轴取最大值时的估计频率记为ft  加入白噪声，绘出信噪比和均方误差的关系曲线 ( using fft () for fast Fourier transformation, spectrum, to draw the sine function and its spectrum  find the spectrum makes the Y-axis maximum value when the estimated frequency is denoted by ft  adding white noise, SNR plot and mean square error curve)

利用MATLAB编写的复杂网络构造程序，很实用的代码~(Complex networks using MATLAB constructor, very useful code to)

说明：  通过分析交通流量时间序列的特点，引入BP神经网络进行短时交通流预测。首先，分析了短时交通流量预测的意义及研究背景；然后，介绍了BP神经网络的结构模型、学习规则以及BP算法的改进算法；最后，通过BP神经网络对短时交通流进行预测，并分析了在各种不同条件下的预测情况。(through the analysis of the characteristics of traffic flow time series, introduces BP neural network for short-term traffic flow prediction. First of all, it analyzes the significance of short-term traffic flow prediction and research background. And then, it has discussed the model and structure, the study rule and the improved algorithm of BP neural network. Finally, by BP neural network to forecast the short-term traffic flow, it analyzes under different conditions of the neural network prediction.)

有关OFDM信号检测与估计的一篇文章，是IEEE上的，有需要的下！！(The OFDM signal detection and estimation of an article is on the IEEE there is a need for the next! !)

说明：  递归最小二乘方算法rls广泛用于信号处理中，它具有收敛速度快的优点。(RLS)

基于contourlet变换的隐性马尔可夫模型树程序包，是由Duncan Po等人编写，其中含有部分C程序(on Contourlet Transform hidden Markov model tree package, Po is from Duncan and others prepared, which contains some C Program)

学习卡尔曼滤波的经典材料，理论很详细，配有Matlab程序，很值得一看，强烈推荐。(Kalman Filtering using matlab have theory and program which is fit to the students)

采用matlab语言编写，对运动中的人像进行跟踪，显示其运动轨迹，并可以计算人像通过特定位置时的时间（帧）(Matlab language to track the movement portrait display its trajectory, and can calculate the time when the portrait through a specific position (frame))

说明：  MIT-DB标准数据库中心电信号的读取程序可用于心电信号压缩与编码(MIT-DB standard ECG database, the reading program can be used for ECG signal compression and coding)