Re: [8023-10GEPON] Presentation on FEC for 10G
Frank C;
WIS? WAN PHY?
Why would we want to use SONET framing
in a 10G EPON?
Howard Frazier
Broadcom Corporation
-----Original Message-----
From: Frank Chang [mailto:ychang@VITESSE.COM]
Sent: Wednesday, August 16, 2006 11:18 AM
To: STDS-802-3-10GEPON@listserv.ieee.org
Subject: Re: [8023-10GEPON] Presentation on FEC for 10G
Frank E;
From PMD/PHY/FEC chipset vendor perspective, I'd like to join to support
your this investigation, which make a lot of sense to me. What I agree
to Roger is that we need look hard into our Net Gain objectives for
various FEC alternatives incls 64/66 code, RS, BCH etc.
I also suggest considering the following based on min. cost/complexity
and max. compatibility:
1) Rate options/tolerance,
2) Integratability in WIS layer.
3) LAN/WAN PHY consideration
4) Compare other competing options incls optics
5) Pef. robustness.
6) Market acceptance.
let know any comments.
Thanks
Frank C.
-----Original Message-----
From: Roger Merel [mailto:roger@luxtera.com]
Sent: Wednesday, August 16, 2006 9:09 AM
To: STDS-802-3-10GEPON@listserv.ieee.org
Subject: Re: [8023-10GEPON] Presentation on FEC for 10G
Frank,
I will support your efforts from a PMD perspective.
Regarding the unresolved topics, I think we need a link budget without
FEC first, which will guide us to a "Net Gain" objective, from that
point we can discuss the trade-space of algorithm and rate options to
meet those objectives.
It is speculation on my part, but we'll need a decent amount of coding
gain... more than we may get from simple RS FEC. We can certainly
solicit proposals on FEC alternatives which are affordable to implement
and offer superior coding gain.
-Roger
-----Original Message-----
From: Frank Effenberger [mailto:feffenberger@HUAWEI.COM]
Sent: Wednesday, August 16, 2006 11:44 AM
To: STDS-802-3-10GEPON@listserv.ieee.org
Subject: [8023-10GEPON] Presentation on FEC for 10G
Dear All,
I am interested in putting together a presentation on FEC for 10G
(serial)
PONs. Judging from the materials from the July meeting, I think that
there
is some common support for the following basic ideas:
1. FEC should be applied at the very lowest layer (streaming-FEC).
2. FEC should be a mandatory part of the line code.
3. FEC codeword size should be aligned with the other EPON structure
sizes
(such as 66b blocks and MPCP time quanta)
There are related topics that I don't think we've reached consensus on:
a. Choice of basic FEC algorithm (e.g, RS, BCH, etc.)
b. Line-rate increasing versus MAC-rate reducing approach
c. Code-rate and objective gain values
(some of these require collaboration with PMD specialists.)
If there are people who are interested in working with me on a
presentation
on these topic areas, please let me know.
Sincerely,
Frank Effenberger
-----Original Message-----
From: Glen Kramer [mailto:glen.kramer@teknovus.com]
Sent: Friday, August 11, 2006 5:04 PM
To: STDS-802-3-10GEPON@listserv.ieee.org
Subject: [8023-10GEPON] presentations for September meeting
Dear colleagues,
It appears that our next meeting will take place on September 18th and
19th
(Monday and Tuesday) and the High-Speed SG will meet on 20th and 21st,
so
there will be no overlap and interested people will be able to attend
both
meetings.
The meeting venue has not been finalized yet. A venue should be
announced at
least 30 days before the meeting, so expect the announcement very soon.
Meanwhile, it is time to start working on presentations for the next
meeting.
There are many specific topics/features that we have to reach consensus
on:
Downstream Wavelength
Upstream Wavelength
Power budgets
FEC: Optional or Mandatory
FEC Category: Stream-based vs. Frame-based
other topics - anything that is in scope of our PAR can be discussed.
If you can think of any other topic not listed here, please propose it
on
the reflector.
If you have opinion on any of these or other topics, make a presentation
with arguments in favor of it. Remember, a proposal should have > 75%
support to get accepted as a baseline. It is a good idea to circulate
proposals on the reflector and get feedback, and to enlist additional
supporters.
Regards,
Glen