Topic: Communication Systems
Which modulation scheme would you suggest for high speed data transmission over a fading channel?
- A. MSK
- B. BPSK
- C. FSK
- D. OFDM
Answer: D. OFDM
Explanation: In OFDM (Orthogonal Frequency Division Multiplexing), the high-speed data stream is divided into several parallel low-rate data streams. Because the subcarriers are orthogonal and have a longer symbol duration, it is highly robust to multipath fading.