Question

Use Matlab to do the following: 1. Plot the message signal $m(t)$ in time domain. 2. Find the Fourier transform of the message signal in frequency domain. 3. Plot the spectrum of this message signal in respect to the frequency domain. 4. Obtain and then plot the modulated signal $y(t)$ using conventional AM equation as follows. $y(t) = A_c[1 + k_a m(t)] cos(2\pi f_c t)$ 5. Use modulation index $\mu$ of 0.75 to plot the modulated signal if $\mu = k_a m(t)$ 6. Plot the frequency spectrum of $y(t)$. 7. What are the sidebands frequencies? 8. Compare the sideband frequencies using equation and the frequency spectrum and comment on the result.

          Use Matlab to do the following:
1. Plot the message signal $m(t)$ in time domain.
2. Find the Fourier transform of the message signal in frequency domain.
3. Plot the spectrum of this message signal in respect to the frequency domain.
4. Obtain and then plot the modulated signal $y(t)$ using conventional AM equation as
follows.
$y(t) = A_c[1 + k_a m(t)] cos(2\pi f_c t)$
5. Use modulation index $\mu$ of 0.75 to plot the modulated signal if $\mu = k_a m(t)$
6. Plot the frequency spectrum of $y(t)$.
7. What are the sidebands frequencies?
8. Compare the sideband frequencies using equation and the frequency spectrum and
comment on the result.

Show more…

Use Matlab to do the following:
1. Plot the message signal m(t) in time domain.
2. Find the Fourier transform of the message signal in frequency domain.
3. Plot the spectrum of this message signal in respect to the frequency domain.
4. Obtain and then plot the modulated signal y(t) using conventional AM equation as
follows.
y(t) = Ac[1 + ka m(t)] cos(2π fc t)
5. Use modulation index μ of 0.75 to plot the modulated signal if μ = ka m(t)
6. Plot the frequency spectrum of y(t).
7. What are the sidebands frequencies?
8. Compare the sideband frequencies using equation and the frequency spectrum and
comment on the result.

Added by Joshua J.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Sri K

06/16/2023

Step 1

To plot the message signal m(t) in the time domain, we need to have the values of m(t) at different time points. Let's assume we have a vector t that represents the time points at which we want to evaluate m(t). We also need to define the mathematical expression Show more…

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Texts: Use MATLAB to do the following: 1. Plot the message signal m(t) in the time domain. 2. Find the Fourier transform of the message signal in the frequency domain. 3. Plot the spectrum of this message signal with respect to the frequency domain. 4. Obtain and then plot the modulated signal y(t) using the conventional AM equation as follows: y(t) = Ac[1 + kam(t)]cos(2πfct) 5. Use a modulation index of 0.75 to plot the modulated signal if ka = m(t). 6. Plot the frequency spectrum of y(t). 7. What are the sideband frequencies? 8. Compare the sideband frequencies using the equation and the frequency spectrum, and comment on the result.

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