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[802.3_SPEP2P] 答复: DATE CHANGE for upcoming 802.3dg meeting at the July 802 plenary

Hi Brian,

 

The presentations for June Ad Hoc show kind of consensus on RS-FEC, dual-mode PCS, and block coding. The main difference is using 8B6T or 4B3T. Regarding 8B6T with partial response, I have the following comments:

 

1.       ML detection is used for 6-tuple decision to get the performance gain. For each received 6-tuple with noise, every Euclidian distance calculation needs 6 multiplication. Considering 430 reference 6-tuples, 2580 multiplications are needed. The detection complexity is even 2x higher than DEC. Please correct me if I am wrong.

 

2.       8B6T performance gain is achieved by referring to a calculated theoretical SNR of 17.9dB. For an ideal channel with only AWGN, simulated BER should be close to theory. However, the results show that in the case of AWGN, 8B6T with partial response requires higher SNR than 4B3T at the same BER. More details of the simulation can be found from the attachment.

 

3.       The primary reason of using 8B6T is to achieve coding gain for long-reach transmission. Considering FEC for long distance and high ML detection complexity, 8B6T seems to be a bit overdesigned for 802.3dg. After all, process industry requires a low-power 100BASE-T1L PHY.

 

Thank you very much.

 

Best wishes,

Tingting

 

 

发件人: George Zimmerman <george@xxxxxxxxxxxxxxxxxxxx>
发送时间: 2024年7月2日 1:45
收件人: STDS-802-3-SPEP2P@xxxxxxxxxxxxxxxxx
主题: [802.3_SPEP2P] DATE CHANGE for upcoming 802.3dg meeting at the July 802 plenary

 

(NO, the plenary dates aren’t changed, this is only about 802.3dg and 802.3dm swapping meeting days)

All ?

In order to accommodate schedules and avoid overlap, the meeting times for the IEEE P802.3dg and IEEE P802.3dm Task Forces at the July IEEE 802 plenary session will be swapped.  This means that the IEEE P802.3dg task force will now be meeting at the beginning of the week ? in the Monday PM1 and PM2, and Tuesday AM1 and AM2 time slots (afternoon of July 15, and morning of July 16, Montreal time).  I will update the 802 calendar shortly with the Webex details. 

 

While this possibility was discussed at the Wednesday June 26 ad hoc (and there were no objections), it is now official.  Thank you for your cooperation helping to accommodate for unplanned events.

 

Please note that presentation requests are still due as per https://www.ieee802.org/3/dg/public/presentproc.html , one week prior to the meeting, with the actual presentations due on Friday before the meeting.  I will keep the request deadline on Wednesday July 10 ? 10AM PACIFIC TIME (not AoE, as the meeting would have been started at 10AM pacific…), and the presentation submittal time as Friday, July 12 AoE.  Earlier submissions are appreciated, as I will be traveling Friday and in the ITU-T workshop on Saturday and won’t be able to post for a while after about 10am Friday morning pacific time.

 

-george

 

 

George A. Zimmerman, Ph.D.

Chair, IEEE P802.3dg 100BASE-T1L Task Force

2nd Vice Chair, IEEE 802 LAN/MAN Standards Committee

CME Consulting, Inc.

george@xxxxxxxxxxxxxxxxxxxx

1-310-920-3860

 

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Attachment: mBnT Simulation.pdf
Description: mBnT Simulation.pdf