Problem 2. Based on the figure below, which represents the spectrum of a DSB-LC signal, find the following. P(@) 47 2n -1200 -1100 -1000 -900 -800 800 900 1000 1100 1200° (a) What is the carrier and message signal frequencies in rad/sec. (b) Find the value of modulation index. (c) What is the message signal m(t). (d) Sketch the modulated signal in time domain p(t) and label the maximum and minimum of the waveform. (e) Calculate the average power for both the carrier (P) and side bands (P,). (f) Find the modulation efficiency (µ)

Q: Select the correct statement after executing the MatLab code with the above

A: The answer is provided below.

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Amplitude modulation

A radio signal can carry information in the form of sound or image for broadcasting or communication. For it to be sent to a greater distance, the signal must be changed or modulated in some way. One of the easiest way is to change the amplitude of the signal with variations of the video or the audio signal. This is called Amplitude Modulaton. In this modulation information of message is carried in amplitude of carrier signal.