return-to-zero
Sign in to saveframed|The binary signal is encoded using rectangular pulse-amplitude modulation with polar return-to-zero code
Article
6 sectionsContents
- Return-to-zero in optical communication
- Return to zero, inverted
- Bipolar return-to-zero (bipolar RZ)
- See also
- References
- Further reading
framed|The binary signal is encoded using rectangular pulse-amplitude modulation with polar return-to-zero code
Return-to-zero (RZ or RTZ) describes a line code used in telecommunications signals in which the signal drops (returns) to zero between pulses. This takes place even if a number of consecutive 0s or 1s occur in the signal. The signal is self-clocking. This means that a separate clock does not need to be sent alongside the signal, but suffers from using twice the bandwidth to achieve the same data-rate as compared to non-return-to-zero format.