Topic: Communication Systems
Which of the following modulation scheme is most bandwidth efficient?
- A. AM
- B. FM
- C. PM
- D. SSB-SC
Answer: D. SSB-SC
Explanation: Bandwidth requirements: $BW_{AM} = 2f_m$, $BW_{PM} = 2(\beta_p+1)f_m$, $BW_{FM} = 2(\beta_f+1)f_m$, $BW_{SSB} = f_m$. Thus, SSB-SC requires the minimum bandwidth and is the most bandwidth efficient.