Data for paper "Frequency-Dependent Per-Port Renormalization"

A Frequency-Dependent & Per-Port (FDPP) channel termination & renormalization method is presented as
a more accurate substitute for the traditional method which
uses frequency-independent, uniform impedance as the serialization/deserialization (SerDes) transmit (TX)/receive (RX)
termination impedances. Although the traditional method is
employed in practically all the existing high-speed interface
standards, the assumption of the constant, uniform termination
impedance at TX and RX is not exact and will lead to inaccuracy.
The new method characterizes the mismatch conditions at the TX
and the RX terminations on a per frequency point and per port
basis, and therefore produces more accurate results during the
channel performance assessment. The mathematic computation
procedure of the FDPP technique is introduced. A proposal of
expanding the [Reference] section in the current Touchstone 2.0
format into a matrix so as to incorporate the frequency-dependent
impedance values is described. Three channels representing
mid/high/extremely high losses are renormalized with the FDPP
approach and the eye-diagrams obtained and compared to that
generated using the traditional method, along with the results of
channel operational metrics (COM). The comparison shows that
the FDPP method produces more realistic and accurate results
than the traditional method.