In a band limited channel higher bit rate can be transmitted with
- A. BPSK
- B. QPSK
- C. FM
- D. FSK
Answer: B. QPSK
Explanation: QPSK (Quadrature Phase Shift Keying) transmits 2 bits per symbol, allowing for a higher bit rate in the same bandwidth compared to BPSK (which transmits 1 bit per symbol).