Implement a Matlab script (M-file) that simulates the operation of the modulator and demodulator.

how can i do this using a matlab ?

Answer 1

[Star Strider]

If you have the Signal Processing Toolbox, use the modulate and demod functions. If you don’t have it, the documentation for them will give you some important hints on how to write your own code to emulate them.

[ahmed hafez]

• Item one
• Item two

[ahmed hafez]

thats all what i got

[ahmed hafez]

[Star Strider]

You have to have discussed this in class or you wouldn’t have it as homework. Also, it doesn’t specify the sort of modulation (and demodulation) you have to use. (I assume amplitude-modulated double-sideband suppressed-carrier, since that is easiest, but it could be any of several.)

This will require you to experiment with baseband modulation and demodulation (assuming you don’t also have to simulate a transmitter and receiver with the requisite additional conversions, since that makes this assignment more difficult).

Remember that baseband AM-DSB-SC modulation requires that you heterodyne your modulating signal with your baseband frequency. Looking through the List of trigonometric identities should give you some clue as to how to do the requisite calculations.

We will help you get your code to run if you give a good effort to coding it, explaining what you are doing and why you are doing it in each command or section of your code, if you have problems with it. We will not do it for you.