[10GBT] Clarification on proposaldetails spreadsheet
Looking through the
proposaldetail spreadsheets I have received, I have seen some numbers that may
may indicate discrepancies in interpretation and am sending this out as a
clarification. This may or may not be relevant to you and does not imply an
error in what you have submitted.
Since the most vocal
debate on channel models has centered around ANEXT modeling, the entries called
for in row 11 aim to understand sensitivity of your proposal to the ANEXT
coefficient. This is not the same thing as the gap between SNR required and SNR
available at the "Slicer input" of the DFE. To get the number requested, adjust
the ANEXT coefficient so that the SNR available equals the SNR
required.
I think some have
submitted the gap between the SNR required and SNR available which is the more
traditional interpretation of margin. It may make sense to include this number
also.
Regards,
Sanjay Kasturia
Editor-in-chief, 802.3an
cell (650) 704-7686
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