RE: CA analysis between CSS and 11g
Rainer,
I don't recall my statement about mid range, but that was two
weeks ago. Yes, if one is trying to represent typical then 24 Mb/s
seems like a reasonable choice.
Steve
-----Original Message-----
From: Rainer Hach [mailto:R.Hach@nanotron.com]
Sent: Tuesday, May 30, 2006 9:13 AM
To: Sheung Li; Shellhammer, Steve
Cc: pat.kinney@ieee.org; stds-802-19@ieee.org;
Joseph.Levy@interdigital.com; Kyung-Kuk Lee
Subject: RE: CA analysis between CSS and 11g
Sheung,
I am actually trying to get a better understanding of 11g. In the 802.11
handbook, it says that the mandatory data rates for OFDM are 6,12 and 24
Mbits/s. The 54Mbit/s is optional but required for Wi-Fi certification.
Is this information correct?
Steve, were you thinking of the 24Mbit/s OFDM mode when you suggested
the mid range data rate in our discussion in Jacksonville?
Best regards,
Rainer
> -----Original Message-----
> From: Sheung Li [mailto:sheung@atheros.com]
> Sent: Friday, May 26, 2006 3:54 PM
> To: Rainer Hach
> Cc: sshellha@qualcomm.com; pat.kinney@ieee.org;
> stds-802-19@ieee.org; Joseph.Levy@interdigital.com
> Subject: RE: CA analysis between CSS and 11g
>
>
> Let me know what information you need. Most of it should
> be on the IEEE802 CD-ROM.
>
> The optional 22Mbps rates don't use OFDM, and are not
> widely supported, so CA analysis isn't required. You
> should take a look at the extremes of the mandatory
> CCK-OFDM rates such as 6Mbps and 54Mbps.
>
> ==S
>
> > -----Original Message-----
> >From: Rainer Hach [mailto:R.Hach@nanotron.com]
> > Sent: Fri 5/26/2006 1:18 AM
> > To: Shellhammer, Steve
> > Cc: pat.kinney@ieee.org; Kyung-Kuk Lee;
> >stds-802-19@ieee.org; Sheung Li;
> >Joseph.Levy@interdigital.com
> > Subject: RE: CA analysis between CSS and 11g
> >
> > Steve,
> > thank you for your email.
> > Does it mean that there is no 22Mb/s using OFDM?
> > If so, which data rate do you feel is the most relevant
> >to assume for
> > 11g?
> > Also, could you please let me know the email address of
> >Sheung Li?
> > Best regards,
> > Rainer
> >
> >
> >> -----Original Message-----
> >> From: Shellhammer, Steve [mailto:sshellha@qualcomm.com]
> >> Sent: Wednesday, May 24, 2006 8:05 PM
> >> To: Rainer Hach
> >> Cc: pat.kinney@ieee.org; Kyung-Kuk Lee;
> >>stds-802-19@ieee.org;
> >> sli@sibeam.com; Joseph.Levy@interdigital.com
> >> Subject: RE: CA analysis between CSS and 11g
> >>
> >>
> >> Rainer,
> >>
> >> IEEE 802.11g is primarily based on OFDM. There is a 22
> >> Mb/s PHY using PBCC. However, that PHY is optional and
> >>not
> >> widely deployed. So my personal opinion is that
> >>analysis of
> >> the 22 Mb/s PHY is probably unnecessary. However,
> >> consideration of the OFDM PHY would be very important.
> >>
> >> If you need some more details on the OFDM PHY you might
> >> be able to get some assistance from Sheung Li our
> >>liaison to
> >> 802.11. I believe BER curves should be available.
> >>
> >> Comment to TAG: In general, maybe if we can start to
> >> compile some of this information we can put it in a
> >>common
> >> place. How about the document that Joseph Levy started?
> >>
> >> Steve
> >>
> >> -----Original Message-----
> >> From: Rainer Hach [mailto:R.Hach@nanotron.com]
> >> Sent: Wednesday, May 24, 2006 7:09 AM
> >> To: Shellhammer, Steve
> >> Cc: pat.kinney@ieee.org; Kyung-Kuk Lee
> >> Subject: CA analysis between CSS and 11g
> >>
> >> Steve,
> >> thanks for your all your input in Jacksonville.
> >> Considering 11g with 22MBPS I am looking for a BER or
> >>PER
> >> equation. One approch could be to figure out how many
> >>sub
> >> carriers with which mdoulation and coding are used and
> >>then
> >> combine the BERs for each subcarrier. Is that
> >>appropriate? If
> >> so, can you help me with the assumptions on subcarriers
> >>etc.
> >> out or can you tell me somebody who could possibly do so
> >>or
> >> recommend some document besides the standard itself?
> >>Thanks!
> >> Best regards, Rainer
> >>
> >> www.nanotron.com
> >>
> >>
> >
>
>