Networks: Data Encoding
NRZ ( on-eturn-to-ero) Codes
NRZ-I ( on-eturn-to-ero-nvert on ones)
The voltage is constant during the bit interval.
NRZI is a differential encoding (i.e., the signal is decoded by comparing the polarity of adjacent signal elements.)
1 existence of a signal transition at the beginning of the bit time
(either a low-to-high or a high-to-low transition)
0 no signal transition at the beginning of the bit time