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Question 4. [20 points] Consider the Double Sideband-Large Carrier (DSB-LC) modulated signal s(t) : s(t) = 10cos⁡(304×103πt) + Acos⁡(300×103πt) + 10cos⁡(296×103πt) a) Determine the message signal m(t) and the carrier signal c(t). b) Calculate the carrier power and the power in the sidebands. c) Find A for the modulation index, μ = 0.8. d) Find A for a power efficiency of 10%.

Question 4. [20 points] Consider the Double Sideband-Large Carrier (DSB-LC) modulated signal s(t) : s(t) = 10cos⁡(304×103πt) + Acos⁡(300×103πt) + 10cos⁡(296×103πt) a) Determine the message signal m(t) and the carrier signal c(t). b) Calculate the carrier power and the power in the sidebands. c) Find A for the modulation index, μ = 0.8. d) Find A for a power efficiency of 10%.

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Question 4. [20points] Consider the Double Sideband-Large Carrier (DSB-LC) modulated signal s ( t ) :
s ( t ) = 10 cos ⁡ ( 304 × 10 3 π t ) + A cos ⁡ ( 300 × 10 3 π t ) + 10 cos ⁡ ( 296 × 10 3 π t )
a) Determine the message signal m ( t ) and the carrier signal c ( t ) . b) Calculate the carrier power and the power in the sidebands. c) Find A for the modulation index, μ = 0.8 . d) Find A for a power efficiency of 10 % .

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