|
Tele-Communication (Telecom) Terms Glossary and Dictionary
NRZ: Non-Return-to-Zero
Non-Return-to-Zero (NRZ) is a binary code in telecommunication system, in which "1s" are represented by one significant condition and "0s" are represented by another, with no neutral or rest condition, such as a zero amplitude in pulse amplitude modulation (PAM), zero phase shift in phase-shift keying (PSK), or mid-frequency in frequency-shift keying (FSK). The pulse has more energy than a RZ (Return-to-Zero) code, but it does not have arrest state, which means a synchronization signal must also be sent alongside the code.
|
