How do I generate DSB SC signal in Matlab?

Published by Charlie Davidson on

How do I generate DSB SC signal in Matlab?

%% DSB SC MODULATION AND DEMODULATION. ld=length(dsb_sc); f=linspace(-fs/2,fs/2,ld); DSB_SC=fftshift(fft(dsb_sc,ld)/ld); %frequency spectrum of dsb_sc modulated signal.

How do you do demodulation in Matlab?

Demodulate AM Signal

  1. View MATLAB Command.
  2. fc = 10e3; fs = 80e3; t = (0:1/fs:0.01)’;
  3. s = sin(2*pi*300*t)+2*sin(2*pi*600*t);
  4. [num,den] = butter(10,fc*2/fs);
  5. y = ammod(s,fc,fs);
  6. z = amdemod(y,fc,fs,0,0,num,den);
  7. plot(t,s,’c’,t,z,’b–‘) legend(‘Original Signal’,’Demodulated Signal’) xlabel(‘Time (s)’) ylabel(‘Amplitude’)

What are the demodulation methods for DSB SC signal?

For DSBSC, Coherent Demodulation is done by multiplying the DSB-SC signal with the carrier signal (with the same phase as in the modulation process) just like the modulation process. This resultant signal is then passed through a low pass filter to produce a scaled version of the original message signal.

How do I generate DSB SC am?

The DSB-SC can be generated using either the balanced modulator or the ‘ring-modulator’. The balanced modulator uses two identical AM generators along with an adder. The two amplitude modulators have a common carrier with one of them modulating the input message , and the other modulating the inverted message .

What is DSBSC demodulation?

Advertisements. The process of extracting an original message signal from DSBSC wave is known as detection or demodulation of DSBSC. The following demodulators (detectors) are used for demodulating DSBSC wave.

What is the bandwidth of SSB SC signal?

Extended single sideband (eSSB)

Extended SSB modes Bandwidth Frequency response
eSSB (Medium-1) 4 kHz 50 Hz ~ 4.05 kHz
eSSB (Medium-2) 4.5 kHz 50 Hz ~ 4.55 kHz
eSSB (Wide-1) 5 kHz 50 Hz ~ 5.05 kHz
eSSB (Wide-2) 6 kHz 50 Hz ~ 6.05 kHz

What does FM demodulation mean?

FM demodulation is a key process in the reception of a frequency modulated signal. Once the signal has been received, filtered and amplified, it is necessary to recover the original modulation from the carrier. It is this process that is called demodulation or detection.

How does AM demodulation work?

The synchronous AM demodulator uses a mixer or product detector with a local oscillator signal. The local oscillator signal is synchronised to the incoming signal carrier so that it produces no beat note with the incoming carrier. The sidebands of the AM signal are then demodulated to provide the required audio signal.

What is the other name of this AM DSB-SC demodulation?

1. Other names for this type of demodulation include a synchronous detector and switching detector.

What is the main limitation of DSB-SC system?

Disadvantages of DSB-SC modulation It involves a complex detection process. Using this technique it is sometimes difficult to recover the signal at the receiver. It is an expensive technique when it comes to demodulation of the signal.

What is the difference between AM and DSBSC?

A type of DSB, called binary phase-shift keying, is used for digital telemetry. Amplitude modulation (AM) is similar to DSB but has the advantage of permitting a simpler demodulator, the envelope detector. AM is used for broadcast radio, aviation radio, citizens’ band (CB) radio, and short-wave broadcasting.

What is the main limitation of DSBSC system?

What is the MATLAB code for DSB-SC modulation?

Here Is The MATLAB Code For DSB-SC Modulation. Fc=154000; % Carrier Signal Frequency Fm=fc/10; Question: Here Is The MATLAB Code For DSB-SC Modulation.

What’s the difference between AM and DSB-SC modulation?

In the double-sideband suppressed-carrier transmission (DSB-SC) modulation, unlike AM, the wave carrier is not transmitted; thus, a great percentage of power that is dedicated to it is distributed between the side bands, which implies an increase of the cover in DSB-SC, compared to AM, for the same power used.

Which is double sideband suppressed carrier transmission ( DSB-SC )?

Double-Sideband Suppressed-Carrier Transmission (DSB-SC): (b) The carrier level is reduced to the lowest practical level, ideally completely suppressed.

Categories: Popular lifehacks