1. Explain the relationship between bits per second and baud for a QPSK system.
2. Explain the significance of the I and Q channels in a QPSK modulator.
3. Define dibit.
4. Explain the relationship between the minimum bandwidth required for a QPSK system and the bit rate.
5. What is a coherent demodulator?
6. What advantage does OQPSK have over conventional QPSK? What is a disadvantage of OQPSK?
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