Question: IN MATLAB 1. AM modulation is accomplished by adding a constant to the mes multiplying the carrier signal and modified message signal. Message signal m()-A
1. AM modulation is accomplished by adding a constant to the mes multiplying the carrier signal and modified message signal. Message signal m()-A sin(o/) m(t) = C + A, sin(a-1) cO) A, sin(@!) Add constant Carrier signal AM modulated signal AM() [C+A, sin(o )A, sin(of) The constant C is generally chosen so that m,(1)=C+ A, sin() is always greater than zero. I.E. if the message amplitude is 10, than C could be 10.1 so that the message signal never drops below zero during a complete duty cycle The modulation depth is a function of the message and carrier amplitudes related by the equation: depth= A, The depth is usually reported as a modulation percentage. Optimal modulation occurs at 100%, i.e. depth equal to 1 . If the modulation is greater than 100% distortion occurs. Write a MATLAB script that prompts the user for inputs C, Am, and Ac In your script set the essage frequency to 10 ang the arrier frequency to 100. Your script should then plot, on one page, the carrier signal (p), the message signal (ma), and the modulated signal. The modulated signal plot title should be dynamic and read: Under-modulated 100% modulation Over-modulated (for modulation less than 100%) (for modulation 100%) (for modulation greater than 100%) Be sure plots look nice and are titled, you can use google to see what an AM modulated signal looks like
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