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Attendees
- Nick Weiner
- Ben Wilcocks
- John Ewen
- John Jaeger
- Sudeep Bhoja
- Jan Peeters Weem
- Piers Dawe
- Martin Lobel
- Tom Lindsay
- Norm Swenson
- Lew Aronson
- Others I missed or did not ID?
Agenda discussed and approved (see below) with addition of an
introduction to the concept of pre-emphasis by Lew Aronson.
Previous minutes/notes from 1/13 approved
Technical progress
- Objective - resolve as many details as possible by/before the Vancouver
meeting Jan '05.
- TWDP simulation tool
- Status
- Norm has sent MATLAB code for review to those who requested it.
If others are interested in reviewing the code, contact Norm Swenson.
- Some discussions have occurred, mostly asking clarifications; no
suggested changes.
- Comments in code are helpful but could be trimmed for standard.
Group agreed to keep as is and trim later if needed.
- Tom submitted a short presentation to support comment 110.
Comment 110 is to adopt the code into the next draft.
- Presentation - see http://grouper.ieee.org/groups/802/3/aq/public/upload/UpdatedcomparisonofMATLABcodewithPIE-D.pdf by
Tom.
- Comparison to PIE-D
- Updated comparison to John Ewen's PIE-D results across 108 fibers
showed excellent agreement to within ~0.02 dB, typically much better.
- Small differences can be due to many things, such as round off
errors. Norm says semi-analytic (IEEE code) and Gaussian (PIE-D
calculation) methods may also produce slightly different results.
- For PIE-D equations, see bhoja_1_0704.
- Filter configurations
- Updated comparison of filter configurations. Shows deterministic
difference.
- Approach where noise goes through Bessel-Thomson filter reduces
penalty to 0.17 dB better than PIE-D.
- Tom recommended to stick with current definition of PIE-D.
- Jan asked about sensitivity of results due to variations in scope
filters. Several answered they expect the errors to be
small.
- Transmitter pre-emphasis
- Lew plans to present the concept and preliminary results in Vancouver.
- Initial conceptual work with electrical waveforms shows potential
significant boost to budget may be possible. Hoping for more experimental
evidence in optical domain. Also needs analysis with shorter equalizers.
- Must be compatible with short links too (Rx peak overload and jitter
concern).
- Who owns budget? Appears that no smaller group owns it. Most everyone in
802.3aq has some stake in it.
- Pattern definition
- Not discussed. Little progress since last call. Actions can be found in
previous meeting notes.
- D1.0 comments
- Continued work on comments relating to TP2.
- New question - should RIN test require duplex traffic to account for Rx
to Tx crosstalk?
- A separate email will publish the recommendations from the ad hoc
group.
Next call
----- Original Message -----
Sent: Tuesday, January 18, 2005 7:28
PM
Subject: [10GMMF] Reminder for TP2 call
1/20/05
All -
Next call
Agenda
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