Pulse modulation (pam, pwm) 0 답변 DVB-RCS or DVB-RCS2 0 답변 전체 웹사이트 Flat Top Pulse Amplitude Modulation (PAM) File Exchange Pulse Code Modulation File Exchange Orthogonal Designs
AM(Amplitude Modulation)调制是一种常见的模拟调制技术,通过改变载波信号的幅度来传输基带信号。在AM调制中,基带信号被乘以一个高频载波信号,产生一个带有两个边带的调制信号。这两个边带位于载波频率的上下方。 FM(Frequency Modulation)调制是一种模拟调制技术,通过改变载波信号的频率来传输基带信号。在FM调制中,基带...
Compare Double-Sideband and Single-Sideband Amplitude Modulation Copy Code Copy Command Set the sample rate to 100 Hz. Create a time vector 100 seconds long. Get fs = 100; t = (0:1/fs:100)'; Set the carrier frequency to 10 Hz. Generate a sinusoidal signal. Get fc = 10; x = ...
%AM Modulation y = Ac*(A0 + Ka*ym).*yc; subplot(3,2,5); plot(t,y); title ( 'Amplitude Modulated signal'); [YfreqDomain,frequencyRange] = centeredFFT(y,Fs); subplot(3,2,6) stem(frequencyRange,abs(YfreqDomain)); 满调制的效果如下: 通过调节Ka的值,可以控制调制深度 Ka<1时为欠...
一、正交幅度调制(QAM)的产生二、正交幅度调制(QAM)的解调三、正交幅度调制(QAM)的Matlab仿真 1、QAM信号波形和星座图仿真 2、QAM信号调制解调仿真四、Matlab源码 1、QAM信号波形和星座图仿真源码 2、QAM信号调制解调仿真源码 本节内容 正交幅度调制,又称为正交振幅键控,QAM(Quadrature Amplitude Modulation)。 多进...
Pulse amplitude modulation (PAM) collapse all in page Syntax y = pammod(x,M) y = pammod(x,M,initphase) y = pammod(x,M,initphase,symorder) Description y= pammod(x,M)returns the complex envelope of the modulation of the input message signal,x, using PAM and the alphabet size,M....
z= amdemod(y,Fc,Fs,ini_phase,carramp)demodulates a signal created through transmitted-carrier modulation instead of suppressed-carrier modulation, wherecarrampis the carrier amplitude of the modulated signal. z= amdemod(y,Fc,Fs,ini_phase,carramp,num,den)specifies the numerator and denominator...
z = amdemod(y,Fc,Fs) returns a demodulated signal z, given the input amplitude modulated (AM) signal y, where the carrier signal has frequency Fc. The carrier signal and y have sampling frequency Fs. The modulated signal y has zero initial phase and zero carrier amplitude, resulting from...
Quadrature Amplitude Modulation with Bit Inputs Modulate a sequence of bits using 64-QAM. Pass the signal through a noisy channel. Display the resultant constellation diagram. Set the modulation order, and determine the number of bits per symbol. ...
example Y= ssbmod(X,Fc,Fs,ini_phase)specifies the initial phase of the modulated signal in radians. Y= ssbmod(X,Fc,Fs,ini_phase,'upper')uses the upper sideband as the desired sideband. Examples collapse all Compare Double-Sideband and Single-Sideband Amplitude Modulation ...