Re: [10GBT] Transmit power levels
Hi!
thanks for ur reply, but i think thats only for (2) below. I agree with u
that we havent seen a formal proposal from anyone regarding peak-to-peak
voltage, and btw, we never assumed ur tutorial for a proposal. I still dont
see ur answer to (1) below.
rgds,
Samir.
----- Original Message -----
From: "George Zimmerman" <gzimmerman@solarflare.com>
To: "SAMIR THOSANI" <samir@PLATOLABS.COM>;
<STDS-802-3-10GBT@listserv.ieee.org>
Sent: Saturday, May 15, 2004 5:32 PM
Subject: RE: [10GBT] Transmit power levels
> You were incorrect in assuming the tutorial was "our proposal". It was
demonstrating a feasible approach.
> We will specify the launch voltage when we make it as a formal proposal.
At that time, all factors will be considered. You will get your response at
the meeting. I will note that we haven't seen a formal proposal with these
details from any other party.
>
> Launch voltage, as I'm sure you know, is more than just taking the pam
levels or the coding of the constellation
> and adding them up - however, it seems that most of the numbers discussed
in this forum have been just that. It is a function of many factors,
including transmit spectral shaping, precoding, transmit filtering, and
group delay variation. Some of these may effect the launch voltage
dramatically, some not at all - it depends on the system. Frankly, without
fully specifying transmit filtering, any precoding (TH or otherwise), none
of these peak-to-peak voltage specifications can stand on their own.
>
> -george
>
> -----Original Message-----
> From: stds-802-3-10gbt@IEEE.ORG on behalf of SAMIR THOSANI
> Sent: Sat 5/15/2004 3:37 PM
> To: STDS-802-3-10GBT@listserv.ieee.org
> Cc:
> Subject: Re: [10GBT] Transmit power levels
>
>
>
> Dear Mr. Zimmerman,
>
> Earlier this week, u made couple of comments regarding transmit power
levels in reply to Sanjay's email on this reflector (in blue fonts):
>
> (1) No , at the time of Joseph's presentation we noted it was not
correct. I can't answer in detail now (I'm on my mobile ), but we will at
the meeting or before.
>
> George A. Zimmerman
> cell: 310 920 3860
> (sent from my mobile)
>
> - we appreciate ur effort in replying even thru ur mobile. i hope u r not
on ur mobile 24x7, and will kindly explain ur comment soon on this forum.
Just let us know where we r wrong.
>
> Also, in response to Joseph's email regarding Mr. Bill Jones's email
explaining peak-to-peak voltage for solarflare tutorial, this is what u
replied:
>
> (2) As mentioned several times, please don't Confuse the tutorial wlth a
proposal.
>
> George A. Zimmerman
> cell: 310 920 3860
> (sent from my mobile)
>
> - well, why dont u just clarify Solarflare's position on "actual
peak-to-peak voltage" and transmit power levels and let everyone know where
u guys stand, for once and all?
>
> - we will sincerely appreciate ur response before the meeting.
>
> thanks,
> Samir.
>
>
>
>
> -----Original Message-----
> From: "Sanjay Kasturia"<SKasturia@TERANETICS.COM>
> Sent: 5/13/04 1:46:33 PM
> To:
"STDS-802-3-10GBT@LISTSERV.IEEE.ORG"<STDS-802-3-10GBT@LISTSERV.IEEE.ORG
<mailto:STDS-802-3-10GBT@LISTSERV.IEEE.ORG";<STDS-802-3-10GBT@LISTSERV.IEEE.O
RG> >
> Subject: [10GBT] Transmit power levels
> A quick scan through past presentations reveals a few different
> proposals for transmit power levels.
>
> http://www.ieee802.org/3/10GBT/public/mar03/babanezhad_1_0303.pdf , a
> March 2003 presentation by Joseph Babanezhad of Plato Labs, proposes
2v
> peak to peak and also has a table on slide 16 that lists other prior
> proposals: 2v peak to peak from a proposal from Cicada and 3.134v peak
> to peak for a proposal from Solarflare.
>
> A subsequent presentation from George Zimmerman of Solarflare, gives
a
> range of TX power, > 6dBm to <10dBm though there is no mention of
> actual peak to peak voltages. If I assume that the 3.134v peak to peak
> corresponds to 10dBm then the 6dBm number will be about 2v peak to
peak.
>
> Joseph, Vivek (Cicada) and George - is my interpretation of each of
your
> proposals correct? Were there any other proposals on transmit power?
>
> Thanks,
>
>
> Sanjay
>
> sanjay@teranetics.com
> cell (650) 704-7686
> office (408) 653-2235
>
>
>