qw

数字信号的传输方式分为基带传输和带通传输，在实际应用中，大多数信道具有带通特性而不能直接传输基带信号。为了使数字信号在带通信道中传输，必须使用数字基带信号对载波进行调制，以使信号与信道的特性相匹配。这种用数字基带信号控制载波，把数字基带信号变换为数字带通信号的过程称为数字调制。通常使用键控法来实现数字调制，比如对载波的振幅、频率和相位进行键控。(Transmission of digital signals into base band transmission and band-pass transmission, in practice, most of the channel with band-pass characteristics can not directly transmit base-band signal. In order to make the digital signal is transmitted with a communication channel, you must use the digital baseband signal to modulate the carrier to make the signal to match the characteristics of the channel. The digital baseband signal control with a carrier, the digital baseband signal conversion to digital bandpass signal is called digital modulation. Keying method is commonly used digital modulation, such as on the carrier' s amplitude, frequency and phase shift keying.)

利用matlab建立的模型——开环直流调速系统（电机控制）(The open loop dc speed control system )

说明：  MATLAB模拟贪吃蛇优秀图像化程序，和在电脑上在线玩贪吃蛇(Matlab simulation snake excellent image program, and online play snake on the computer)

QAM simulator for AWGN, multipath channel

Sparse Fuzzy Model Identification Matlab Toolox – RuleMaker Toolbox

BPF作用是使某频段内的有用信号通过，而高于或低于此频段的信号将被衰减。(BPF role is to make a useful frequency band signal, while the higher or lower than this band signal will be attenuated.)

Lax Wendroff method for Pulse propagation

先进的pid控制 及其matlab的仿真 含源代码(Advanced pid control and matlab simulation with source code)

This function used to find peaks of histogram.

应用灰色关联方法进行变压器油色谱故障诊断程序(Transformer oil DGA diagnoses program by gray relationship method)