NRZÜbertragung

NRZÜbertragung, also known as Non-Return-to-Zero signaling, is a digital encoding scheme used in telecommunications and data transmission. In NRZÜbertragung, a binary one is represented by a specific voltage level, and a binary zero is represented by a different voltage level, usually the opposite polarity. Crucially, the signal level remains constant for the entire duration of each bit. This means the signal does not return to zero volts between bits. There are two primary variations: NRZ-L (Non-Return-to-Zero-Level) and NRZ-I (Non-Return-to-Zero-Inverted). In NRZ-L, a high voltage typically represents a '1' and a low voltage represents a '0'. In NRZ-I, a transition in voltage signifies a '1', while no transition indicates a '0'. A significant advantage of NRZÜbertragung is its simplicity and efficiency in terms of bandwidth utilization, as it requires only two distinct voltage levels. However, it can suffer from baseline wander and synchronization issues, especially when transmitting long sequences of identical bits, as there are no inherent clocking transitions to help the receiver maintain timing. Despite these drawbacks, NRZÜbertragung remains a fundamental concept in digital communication.