25 Aug 2004IEEE802.3aq Channel model ad hoc Task 2: Time-varying study & modal noise 1 Teleconference notes, 25 August 2004 Jonathan King

25 Aug 2004 IEEE802.3aq Channel model ad hocTask 2: Time-varying study & modal noise

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IEEE802.3aq Channel model ad hocTask 2: Time-varying study & modal noise

Teleconference notes, 25 August 2004Jonathan King


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Agenda

1) attendees

2) agree last meeting notes

3) a) Discussion and adoption of standard link proposal

b) Discussion and proposal to adopt GR-63 CORE for office environment conditions

c) Next steps for task 2

4) other business

5) next meeting date/time


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1) Attendees• Jonathan King, Big Bear Networks• Petre Popescu, Quake• Tremont Maio, Analog• Ali Ghiasi, • John Dallesasse, Emcore• Yu Sun, Optium• Peter Hallemaier, Optium• Abhijit Phanse, Scintera• Robert Coenen, Scintera• Gary Schaulov, R-Soft• Chet Babla, Phyworks• Brentwood Lock R-Soft• Paul Kolesar, Systimax

please let me know if you or your organization have been missed

2) Minutes of last meeting agreed - no issues raised


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3) a) Discussion and adoption of standard link proposal (as described in '62 MMF con loss

and draft worst case configuration' by David Cunningham)There was general support on the call for the standard link proposed above and there was no e-mail commentary on the standard link proposal had been received. An informal vote on adopting the standard link proposal for task 2 yielded 8 for, 0 against and 4 abstaining. A comment was noted that the potential for connector vibration was still a concern, but that it should not hold up adoption of the standard link as proposed.

b) Discussion and proposal to adopt GR-63 CORE for office environment conditions It was agreed this standard gives the most comprehensive description of testing for an in-building operating environment. Robert Coenen agreed to put together a propose adopting GR-63-CORE as the basis of vibration testing.

c) Discussion of next steps for task 2: where do we go from here ?First step is to make preliminary vibration measurements on a standard link and review - expectation was that this would help define further steps.Task 2 modelers need a finalized channel model from task 1 for work to proceed.Some effects (eg polarization rotation) can be modeled more easily and show the worst case variation of IPRs; its difficult to model fibre movement and relate to IPR change though. The link between physical perturbation and impulse response variation probably needs to be determined experimentally - modeling peak variation would be a valuable sanity check on experiments. Task 2 needs to confer with the channel model ad hoc group to clearly define the input required on time variation effects, in preparation for the September interim.


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5) Next meeting

• Wednesday 1st Sept 9am PCT, 5pm UK

4) Other business

No issues raised

Documents

25 Aug 2004IEEE802.3aq Channel model ad hoc Task 2: Time-varying study & modal noise 1 Teleconference notes, 25 August 2004 Jonathan King