ofdm-tongbusuanfa

对于参数估计问题,克拉美罗界(简称CRB)为任何无偏估计量的方差确定了一个下限. 即不可能求得方差小于下限的无偏估计量,并为比较无偏估计量的性能提供了一个标准. 本程序对CLRB（克拉美罗下界）进行了描述，预留了参数。 希望能对同志们提供帮助。(For the parameter estimation problem, Cramer-Rao bound (referred to as CRB) for any unbiased estimator of variance to determine a lower limit that can not be obtained is less than the minimum variance unbiased estimator and unbiased estimator for comparing the performance of provides a standard procedure for this CLRB (Cramer-Rao lower bound) for a description of the reserved parameters. Hoping to help comrades.)

小电流接地系统发生接地故障时，利用prony算法提取暂态特征分量并利用相关分析法实现选线取得很好的效果，有效的排除了干扰信号的影响，结论明显、准确性高。(When the small current grounding system occurs ground fault , we use prony algorithm to extract the transient characteristics of the component and line selection by using correlation analysis. The simulation present that the algorithm effectively eliminate the influence of interfering signal. The result has a good effect and high accuracy obviously.)

Comparison and Evaluation of Different Cluster Validity

说明：  过零点检测 识别正弦波的过零点 进行过零点的检测 识别正弦波的过零点(Zero crossing detection to find the zero crossing of sine wave)

Matlab神经网络工具箱，利用其中的BP函数，对待测尿沉渣图像进行分类( classification based on BP)

运用matlab绘制能带。可以有效地提高绘图的效率和减少误差(matlab point picture)

event management is very important.

霍普菲尔德网络的另外一个例子，matlab编程(Hopfield networks, another example, matlab programming)

几种重要的滤波器，中值滤波，fft理想低通滤波，fft高斯低通滤波(median+fft lowpass+fft guass-lowpass)

color histogram of an image