QUESTION An AM signal is given by the equation: Vam (t) = 10 sin (2tfct) + 2.5 cos 300tt - 2.5 cos 2000rtt The signal is applied to a 50Tt load. 1. Write the modulation signal equation, Vm(t) 2. Write the carrier equation, Vc(t) 3. Determine the modulation coefficient in percentage 4. Name the behavior of signal in (iii) 5. Sketch the AM signal in (iv) 6. Calculate the carrier power 7. Determine the total power 8. Sketch the frequency spectrum based on AM equation given 9. Sketch the frequency spectrum by using Bessel function table by use the value of modulation index from the equation 10. Assume transmission have transmit five channels with probability 0.1, 0.35, 0.05, 0.2 and 0.3. By using Shannon Fano coding, determine the code word and efficiency for the channel. 11. by using code word in (x), sketch the line coding for polar non return to zero, return to zero inverted and Manchester IEEE.

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