Question

In which waveform logic 1 is represented by half bit wide pulse and logic 0 is represented by absence of pulse?

(a) Unipolar RZ

(b) Bipolar RZ

(c) RZ-AMI

(d) Manchester coding

I had been asked this question during an online interview.

Enquiry is from Baseband Transmission in section Formatting and Baseband Modulation of Digital Communications

Answer 1

Correct choice is (a) Unipolar RZ

To explain I would say: In unipolar RZ waveform, logic 1 is represented by half bit wide pulse and logic 0 is represented by the absence of a pulse.