Engineering Voltage Carrier Signal and Voltage Modulating Signal (AM)

[Lord Doppler]

Homework Statement

Find the Voltage Carrier Signal and Voltage Modulating Signal (AM) from the power spectrum

Relevant Equations

Pt = Pc(1+(m^2)/2) [Total Power]
m = Vm/Vc [Modulation Factor]

Hello everyone, I'm trying to find the Voltage Carrier Signal and Voltage Modulating Signal from the power spectrum of a AM signal

1) I change the scale dBW to W and I have this:

From this I have that Pc (Power of the Carrier signal) is 50 W and I don't know how to continue with the exercise, someone knows? Thanks

 

[tech99]

The total power in the sidebands is 2 x 8 = 16 Watts.
Power = V^2 / R
So the modulation voltage relative to the carrier (the modulation factor) is SQRT (16/50).