Function File: m = ssbdemod (s, fc, fs)
Function File: m = ssbdemod (s, fc, fs, phi)

Creates the SSB demodulation of the signal s with carrier frequency fc, sampling frequency fs initial phase phi and a standard 5th order low pass butterworth filter [b a] = butter (5, fc .* 2 ./ fs) where b and a are numerator and denominator respectively.

The initial phase phi is optional and will be considered 0 if not given.

references and equation for ssdebmod: https://electronicscoach.com/single-sideband-modulation.html https://www.ee-diary.com/2023/02/ssb-sc-am-signal-generation-in-matlab.html

Inputs:

  • s: amplitude message signal
  • fc: carrier frequency
  • fs: sampling frequency
  • phi: initial phase

Output:

  • m: The SSB demodulation of s

Demo 

demo ssbmod

See also: ssbmod,ammod,amdemod, fmmod, fmdemod.

Demonstration 1

The following code

 fc=400;
 fs=8000;
 t=0:(1/fs):0.1;
 y=sin(20*pi*t);
 y1=ssbmod(y,fc,fs);
 y2=ssbdemod(y1,fc,fs);
 figure(1)
 subplot(3,1,1)
 plot(t,y)
 subplot(3,1,2)
 plot(t,y1)
 subplot(3,1,3)
 plot(t,y2)

Produces the following figure

Figure 1

Package: communications