Topic: Communication Systems
The maximum transmission power efficiency of DSB-SC Amplitude modulation is
- A. 25%
- B. 33.33%
- C. 50%
- D. 100%
Answer: D. 100%
Explanation: DSB-SC is an amplitude modulation but without carrier wave, $\eta_{power~efficiency}=\frac{Carrier~power}{Total~transmitted~power} = 0$. Also $\eta_{transmission} + power~efficiency = 1$. $\eta_{transmission~efficiency} = 1 = 100\%$.