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Larry and all: I have attached a slide which compares the two proposals. I am hoping that this will generate more discussions and help us make progress. Please take a look at http://www.ieee802.org/3/efm/public/jul02/p2mp/gummalla_p2mp_1_0702.pdf for the calculations on efficiency. Best Regards, Ajay > -----Original Message----- > From: owner-stds-802-3-efm@majordomo.ieee.org > [mailto:owner-stds-802-3-efm@majordomo.ieee.org]On Behalf Of larry > rennie > Sent: Monday, July 01, 2002 6:31 PM > To: stds-802-3-efm > Subject: [EFM] EFM FEC Proposals > > > > Fellow EFM Task Force Members, > > At the last EFM meeting in Edinburgh we passed the following FEC motion: > > 17. Motion to add an FEC option for the 1Gig P2P and P2MP PHY, > maintaining backward compatibility with the 1000BASE-X PCS, for the > following reasons: > 1. Improves reach of a MPN limited link by 50% for links with MPN > penalty of about 2dB > 2. Permits operation at a SNR lower by 2.5 dB for non-dispersion > limited links. > > Two different FEC implementation proposals will be presented in > Vancouver and they are posted under the General Session material on the > EFM web site. One proposal is frame based and the other is stream > based. If you are at all interested in FEC for EFM, I encourage you to > please take a look at these two proposals and get your comments and > questions back onto the reflector before the meeting. This will give > the presenters and their supporters time to formulate a proper response > and will conserve our precious meeting time in Vancouver. > > Regards, > > Larry > > > > > >
Comparison of FEC proposals.pdf