Hermite

本程序是EM算法，是参数估计（极大似然估计）方法的数值解法。(This procedure is the EM algorithm, is the parameter estimation (MLE) method of numerical solution.)

Calculate the coefficent of a plane that fits better N 3d pints

一个简单的基于Matlab的BP神经网络的事项~~~~(A simple matter based BP neural network in Matlab ~ ~ ~ ~)

calculation of transformator parameters by Mfile in Matalb software (power engineering field)

speed control of induction motor

说明：  任务：设计一个4×2.5Gbit/s 长距离光纤传输系统，并利用OptiSystem 仿真验证。 要求： 1．采用波分复用技术，波长设置以100GHz 为间隔，频率分别为193.1THz、193.2THz、193.3THz、193.4THz，每个波长传输速率为2.5Gbit/s（NRZ），传输距离为300km。采用常规光纤，光纤损耗系数为0.25dB/km。 2．单通道光发送机最大输出功率为0dBm，光接收机的接收光功率不低于－26dBm，过载点为－10dBm。 3．可以采用EDFA 作为线路放大器，其中EDFA 的输入功率限制在－18～2dBm，最大输出功率20dBm，增益范围为13～25dB，噪声指数4.0dB。(Task: Design a 4 x 2.5 Gbit/s long-distance optical fiber transmission system, and use OptiSystem simulation to verify. Requirement: 1. Using wavelength division multiplexing technology, the wavelength is set at 100GHz intervals, with frequencies of 193.1 THz, 193.2 THz, 193.3 THz and 193.4 THz, respectively. The transmission rate of each wavelength is 2.5 Gbit/s (NRZ), and the transmission distance is 300 km. The loss coefficient of conventional optical fibers is 0.25dB/km. 2. The maximum output power of a single-channel optical transmitter is 0 dBm, and the receiving power of an optical receiver is not less than -26 dBm, and the overload point is -10 dBm. 3. EDFA can be used as line amplifier, where the input power of EDFA is limited to - 18-2dBm, the maximum output power is 20dBm, the gain range is 13-25dB, and the noise index is 4.0dB.)

feature selection using evolutionary algorithm

LDPC码的详细编解码程序，使用部分c函数接口 加速程序运行(LDPC code codec detailed procedures, use of some of the c function interface to accelerate the program to run)

This toolbox is not a general-purpose toolbox or manipulating polygons. It just provides a inimal set of functions dedicated to closed polygons to support the Active contour toolbox (by the same author). Only the plotting function also supports open polygons.

计算无线光通信diffuse信道延时，通过diffuse系统模型来计算其延时，可完美运行(Calculation of fso diffuse channel delay by diffuse system model to calculate the time delay, can run perfectly)