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Dear Mr. Kasturia,
Can u please clarify based on what u r making the
following statement:
" As I
understand it, the PAM 4 type schemes that would use the much higher symbol rate
would NOT meet our distance objectives "
This might be just
YOUR understanding. so far, i dont think we have seen a single SOLID evidence to
the above in past 2 yrs.
i think we r all
still under the clouds, as they say. And as far as ur comment
regarding the 802.3 voters, i wud say that apart from
Mr. Sailesh Rao, i
dont think any of the major PHY vendors associated with development of
10GBASE-T ever designed a PHY before,
like 1GBASE-T. This
is a small world, btw, and we all know one another's track record. so, lets just
leave at that.
rgds,
Samir.
----- Original Message -----
Sent: Tuesday, May 11, 2004 10:12
AM
Subject: [10GBT] Symbol rate
At the March meeting, there was a motion to bound the
range of symbol rates. The motion, moved by George Zimmerman, suggested
a symbol rate that would range from 714Msym/sec per pair to 1000Msym/sec per
pair.
This motion failed to
get the requisite 75% yes vote. Some of the people who voted against this
proposal were in favor of schemes that would require higher symbol
rates - e.g. 1250Msym/sec per pair but were probably not very familiar with
802.3 operation. With 802.3 voters in the room, the motion would have
passed. See the vote tally appended below from the meeting
minutes.
As I understand it, the PAM 4 type schemes that would
use the much higher symbol rate would NOT meet our distance objectives
but offered some value in that they could enable much lower power transceivers
for shorter distances than called for in our objectives.
Should these schemes, which do not meet our distance
objective, but could still be valuable for customers who want shorter reach
and lower power be considered in separate class - possibly in a different
forum than 802.3an?
Can our chair, Brad Booth, give us his opinion on
this?
Vote count from minutes of March
meeting
TF Voters Y: 24 N: 15 A:
19
802.3 Voters
Y: 21 N: 5 A: 9
Sanjay Kasturia
Editor-in-chief
cell (650)
704-7686
office (408)
653-2235
Teranetics Inc.
2953 Bunker Hill Lane, Suite
204
Santa Clara, CA
95054
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