PAM4 This is a transmission method in which 2 bits are superimposed. Normal NRZ has two stages, Low = 0, High = 2, but there are four stages, 1st stage = 00, 2nd stage = 01, 3rd stage = 10, 4th stage = 11 (eye pattern When writing, normal eye patterns […]
Frequency Distortion and Coding As the first part of the technical note "Frequency and Data Rate", this time we will talk more about "Frequency Distortion and Coding" as a sequel. If you have not read “Frequency and Data Rate”, please read that first […]
Nyquist Frequency Originally a sampling theorem in the digitization of analog signals, it indicates that "only up to half the sampling frequency can be reproduced". In turn, the main component of digital transmission signals […]