putongPID

ITS MATLAB CODE FOR echo 7.1 VERSION

可以对周期信号进行傅里叶单边谱分析和双边普分析，提取谐波分量(Fourier spectral analy sis can be unilateral and bilateral analysis)

说明：  扩展卡尔曼滤波与粒子滤波滤波性能比较的源程序(Extended Kalman filter and particle filter source)

温度场的数值模拟程序，主要是应用matlab编程实现(temperature field of numerical simulation program, is the application of Matlab programming)

用于灰色关联系数和灰色关联度的计算，其中进行了初值化和归一化处理。(Correlation coefficient for the gray and gray correlation calculation, which carried out the initial value of and normalized.)

For a given array of angles, determines which are within the bounds, accounting for wrap around

Script for computing the BER for BPSK modulation in a Rayleigh fading channel with and without transmit beamforming

利用C++语言编译的速度之间转化运算的控制台程序(Using the conversion operation console program between C++ language compilation speed)

说明：  基于matlab的LDPC码的encoding和decoding的程序，强烈推荐初学者学习参考(Matlab based on the LDPC code encoding and decoding procedures, strongly recommended reference for beginners to learn)

本文基于BP神经网络应用于预测的原理，提出预测步骤及预测可行性，探讨建立基于BP神经网络的预测模型的关键技术，包括样本的选取与预处理、输入输出变量的选取、隐层节点数的确定、初始权值和阈值的选取、激活函数、训练算法与参数的选取，最后建立合理的网络模型；结合住宅市场的实际情况，建立两类BP 神经网络预测模型：基于时间序列的趋势预测模型以及基于影响因素的回归预测模型，即分别采用神经网络趋势预测和回归预测的思路，把住宅市场的供给、需求与房价的历年数据以及其影响因素的数据分别作为学习样本，建立预测模型，进行预测。(Real estate development risk prediction )