gbvs

说明：  防碰撞纯扩展ALOHA的matlab仿真算法(Pure ALOHA anti-collision expansion of the simulation algorithm matlab)

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 )

说明：  采用Matlab对信号进行四层分解与重构，合成一个文件更有利于理解Matlab功能(use Matlab to finish your signal processing)

analogue model of boost convertor, for high volatge regulation

MATLAB在ABC边界上的FDTD程序仿真程序。(MATLAB in the ABC program on the border FDTD simulation program.)

matlab的程序设计——音频信号的分析与合成、音频频谱分析仪、幅度调制(matlab program design- Audio Signal Analysis and Synthesis, audio spectrum analyzer, amplitude modulation)

子空间匹配追踪matlab程序，首先选择2K个原子，然后通过校正选择其中的K个原子。(Subspace matching pursuit matlab program, first select 2K atoms, and then select one by correcting the K atoms.)

三相直交直流变换器，PWM (ThreePhase_ACDCAC_PMWconverter )

幅频键控ASK的相干调制解调以及非相干调制解调的仿真实现，源代码中作了详细的备注，通过学习该代码能够对ASK的调制解调有更加深入的认识(Coherent amplitude and frequency shift keying ASK modulation and demodulation, and non-coherent modulation and demodulation simulation, source code made detailed notes, by learning the code to the ASK modulation and demodulation of a more in-depth understanding of)

这是一个用MATLAB做的基于矩特征的图像特征提取，值得借鉴-This is a done using MATLAB moment characteristics based on image feature extraction, is worth learning from(This is a MATLAB moment in image-based feature extraction, worth learn-this is a done using MATLAB moment characteristics based on image Feature Extraction, is worth learning from)