Question

NRZ and QPSK are respectively

• A. Baseband and baseband signaling schemes
• B. Baseband and pass band signaling schemes
• C. Pass band and pass band signaling schemes
• D. Error control and source coding schemes

Hint:

Remember the difference between baseband and passband signaling. Baseband is direct transmission of signal, whereas passband involves modulating a high frequency carrier with data.

Answer 1

The Correct Option is B

Non-Return-to-Zero (NRZ) is a baseband digital signaling scheme where signal levels are represented by different DC levels. Whereas, Quadrature Phase Shift Keying (QPSK) is a passband modulation technique where digital information is represented in the phase of a carrier signal.