Spectrum
This is basically an amplitude modulation wave without the carrier therefore reducing power wastage, giving it a 100% efficiency rate. This is an increase compared to normal AM transmission (DSB), which has a maximum efficiency of 33.33%, since efficiency is defined as:
E = (Sideband Power)/(Sideband Power + Carrier Power).
Spectrum plot of an DSB-SC signal:
Read more about this topic: Double-sideband Suppressed-carrier Transmission
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