Re: [STDS-802-3-EPOC] Any presentations for Wednesday's scheduled PHY Sub-Group Conference Call?
Marek,
I agree that it is far too complicated. I want to remove some of the complications. I compared the simplest method of a single medium shortened to what has been approved so far. At a minimum, we can remove complexity that has negative or little performance improvement. Of course, we could decide to go with the simplest approach. I'm trying to clearly identify the difference on each option.
Thanks
Ed
Sent from my iPad
> On Jan 29, 2014, at 7:12 AM, Marek Hajduczenia <marek.hajduczenia@xxxxxxxxx> wrote:
>
> Ed,
>
> In all honesty, I look at your presentation and I am getting really lost in all options and conclusions being drawn. Is it just me, or we are just overdoing it on the side of options and optimizations? What's wrong with picking just medium FEC codeword and allowing for codeword truncation at the end? The decoding process should be fairly easy, since it would be driven by either full FEC codeword or end of burst marker sequence. It does not seem to affect negatively SNR and decoder latency and at the same time we avoid all the complexity of options, filling algorithms and assumptions that the CLT has to make to calculate the size of the grant to accommodate reported data.
>
> I feel that we are driven to decide based only on the very noble, but yet completely impractical notion of very high efficiency. Ethernet has been always about low cost and robustness and not perfect efficiency. I understand the need to use the spectrum resource efficiently, but after a certain efficiency point, cramming more bits into the channel incrementally increases the overall system cost, its complexity and decreases its robustness.
>
> My suggestion is therefore simple: pick medium FEC codeword we have defined right now, allow for codeword truncation and move on.
>
> Regards
>
> Marek
>
>
>> On 28 January 2014 17:51, Ed Boyd <ed_boyd@xxxxxxxxx> wrote:
>> Hi Mark,
>>
>> I would like to discuss the attached presentation and get feedback tomorrow if possible. I tried to expand on the comments from the FEC filling algorithm discussion at the meeting.
>>
>> Thanks,
>> Ed…
>>
>> Sent from Windows Mail
>>
>> From: Mark Laubach
>> Sent: Monday, January 27, 2014 4:19 PM
>> To: STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx
>>
>> Dear IEEE P802.3bn Task Force Participants,
>>
>>
>>
>> Our scheduled PHY sub-group conference call is this Wednesday at 10AM Pacific.
>>
>>
>>
>> If you have any presentations for socialization or other topics, please send them on the reflector by 5PM Pacific tomorrow (Tuesday).
>>
>>
>>
>> Please be familiar with the IEEE SA Patent Policies at:
>>
>> https://development.standards.ieee.org/myproject/Public/mytools/mob/slideset.pdf
>>
>>
>>
>> WebEx Meeting Number: 920 271 005
>>
>> To start: https://broadcom.webex.com/broadcom/j.php?J=920271005
>>
>>
>>
>> Yours truly,
>>
>> Mark Laubach, Chair
>>
>> IEEE P802.3bn EPoC PHY Task Force
>>
>>
>>
>> Broadband Communications Group
>>
>> Broadcom Corporation
>>
>> 1351 Redwood Way
>>
>> Petaluma, CA, 94954
>>
>> <image001.jpg>
>>
>> Tel: +1.707.792.9093
>>
>> Cell: +1.650.996.2219
>>
>
>
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