Question

This lab's aim is to teach you the amplitude modulation. You are provided with various m− files in blackboard, download them to your computer and place them into the current directory of your MATLAB. Instructor will give a lecture in the beginning to help you understand the m-files given in blackboard. Go over the files and once you feel comfortable move to part 2.

Part 2 Q-1) You're expected to write a function file which generates DBS-SC given below. Label the graph carefully. You may use comments to denote your logic. Save your m-file and graphs (as jpeg or eps) to a doc file. Your function should have three parameters; message signal, time axis and frequency of carrier y(t)=m(t)cos(2πfct)

Answer 1

The student is expected to write a MATLAB function for amplitude modulation to generate a Double Sideband-Suppressed Carrier (DBS-SC) signal, displaying how the carrier wave is modulated using the message signal without changing the carrier frequency.

Step-by-step explanation:

The lab's aim is to teach the principles of amplitude modulation (AM), which is a technique used to impose information on an electromagnetic carrier wave by varying its amplitude. To create a Double Sideband-Suppressed Carrier (DBS-SC) signal in MATLAB, you would write a function that uses the message signal m(t), the time axis, and the frequency of the carrier fc to generate the modulated signal y(t) = m(t)cos(2πfct). The generated graph must be properly labeled, showing how the amplitude of the carrier wave is modulated by the message signal without altering the carrier's frequency. An example of such modulation can be seen in various electromagnetic applications like AM radio, where the carrier wave's amplitude represents the audio signal's amplitude.