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Hi,
I am resending this email in response to John Petrilla presentation. Regards, Arash From: arash_farhood@xxxxxxxxxxx To: stds-802-3-100gngoptx@xxxxxxxxxxxxxxxxx Subject: RE: [802.3_100GNGOPTX] SMF Ad Hoc Date: Tue, 4 Dec 2012 20:17:57 +0000
Folks, I did some quick calculations to check the 1dB MPI penalty John showed us today. We need to pay more attention to this 1- Assume discount factor of 0.6, ROSA/TOSA_RL=-12dB and no connector, ER=3.5dB The upper bound MPI penalty according to bhatt_01_0512 is 1.63dB. The MPI Penalty according to San Antonio statistical method is 1.31dB. John slide shows around .9dB. The difference is most likely coming from the fact that the John's calculation is taking into account IL and I do not. I am not doing this since I am not really sure how to do this correctly. I am not convinced the method that is used in 10GEPBaud3_1_16a.xl is actually truly worst case. 2- I added 4 connectors to the the above with RL_connector=-35dB bhatt_01_0512 MPI=2.49dB and SA_ Stats_MPI=1.97dB The point is, we should not ignore the connectors even if the RL_Connector=-35dB 3- Removed the discount factor from the above bhatt_01_0512 MPI=5.66dB and SA_ Stats_MPI=4.06dB So the discount factor is a substantial discount! Regards, Arash Farhood Director System Eng Cortina Systems Date: Tue, 4 Dec 2012 13:32:21 -0500 From: panslow@xxxxxxxxx Subject: [802.3_100GNGOPTX] SMF Ad Hoc To: STDS-802-3-100GNGOPTX@xxxxxxxxxxxxxxxxx Hi,
The draft minutes and presentation from today’s call are on the SMF Ad Hoc web page.
As discussed on today’s SMF Ad Hoc call, the next call of the SMF Ad Hoc will be at 8:00 am Pacific on Tuesday 18 December (1.5 hour duration if sufficient presentations otherwise shorter). Please send requests for presentations on any of the SMF proposals to me.
There is a further SMF Ad Hoc opportunity on 8 Jan.
Peter Anslow from Ciena has invited you to join a meeting on the Web, using WebEx. Please join the meeting 5-10 minutes early so we may begin on time. +44-203-4333547 (United Kingdom) 4438636577 (United States)
Regards, Pete Anslow | Senior Standards Advisor
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