duoxiaoshizuixiaoerchengfa

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.)

基于simulink模块的无刷直流电机仿真，适合初学者理解电机运行机理(Simulink module based on the brushless DC motor simulation, suitable for beginners to understand the motor operating mechanism )

卷积编译码，采用viterbi译码来对其进行仿真(this is convolutional)

杆的有限元程序：二维杆的静态分析，求出位移、应力、应变，材料力学与弹性力学结果进行了比较(Finite element procedures: two-dimensional bar of static analysis, find the displacement, stress, strain, material mechanics and elasticity results are compared)

三相有源滤波的仿真，不会让你失望的，看看(matlab apf)

这是关于philips932源码GUI，我平时用的．(This is the source of philips932 GUI, I usually use.)

可以用来求相应图的强连通分支，属于图论组合数学上的算法编程题(a programing of combinatoral optimation optimization)

关于内部热耦合精馏塔的静态模型建模研究代码(Internal thermal coupling on the static modeling of distillation column)

是Matlab图像处理的原程序代码，适合初学者使用。(Matlab image processing is the original code, suitable for beginners.)

matlab在数学建模中的应用，有许多有用的算法，可以帮助需要参加数学建模工作的人快速建立模型并求解(matlab mathematical modeling, there are many useful algorithms, people need to participate in the mathematical modeling can help to quickly build the model and solving)