This example shows how we deal with limited bandwidth in
modern times.
This picture shows measured waveforms using an
Accelerant PAM-4 multilevel transceiver running at a baud rate of 2.5
GHz (~ 5 Gb/s).
At startup (without equalization) the received data eye
is closed. After automatic convergence the transmitter pre-distorts
(equalizes) the transmitted PAM-4 signal so that the received signal is
easily recovered.
The transmitted baud interval is 400 ps, yielding a
delivered data rate of roughly 5 Gb/s.