FW: CA analysis between CSS and 11g

["Shellhammer, Steve" <sshellha@xxxxxxxxxxxx>]

802.19 TAG,

	I would encourage each of you to review this revised CA document
by 15.4a.  They have supplied it to us before their next letter ballot
so as to give us time to give them comments in advance.

Regards,
Steve

-----Original Message-----
From: Rainer Hach [mailto:R.Hach@nanotron.com] 
Sent: Monday, June 12, 2006 7:17 AM
To: Shellhammer, Steve
Cc: Benjamin A. Rolfe; pat.kinney@ieee.org; Jay Bain; John Lampe;
Kyung-Kuk Lee
Subject: RE: CA analysis between CSS and 11g

Steve,
I would like to notify you that 15-06-0214-01-004a-CSS-CA-document.doc
has been posted to the wirless server.
Analysis for the coexistence between CSS and 11g has been appended in
this revision.  Additional frequency offset values and duty cycle
assumptions of 1% and 10% have been used in the new section. Some
details und curve shapes might still change but basically that's what we
intend to provide. If you agree that this analysis is sufficient for
11g, we will update the analyses for the other systems accordingly.
Please take a look and let us know.
Best regards,
Rainer


> -----Original Message-----
> From: Shellhammer, Steve [mailto:sshellha@qualcomm.com] 
> Sent: Wednesday, May 31, 2006 9:01 PM
> To: Rainer Hach; Sheung Li
> 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
> 
> 
> Rainer,
> 
> 	That should work for an AWGN channel.  I we have some 
> simulation results that would even be better.
> 
> Steve
> 
> -----Original Message-----
> From: Rainer Hach [mailto:R.Hach@nanotron.com] 
> Sent: Wednesday, May 31, 2006 3:33 AM
> To: Shellhammer, Steve; Sheung Li
> 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
> 
> Steve, Sheung,
> Coming back to the question for a BER equation for 11g I 
> wonder whether the following would make sense: Identify the 
> modulation and code rate for the data rate in question (e.g 
> 16QAM, R=1/2 for 24Mbit/s), calculate the partial BER (for on 
> subcarrier) by using the textbook equation and reasonable 
> coding gain for a convolutional code with k=7 and finally 
> calculate the BER by assuming the 53 subcarriers to transport 
> independent bit streams. Would this approach be acceptable? 
> Best regards, Rainer
> 
> > -----Original Message-----
> > From: Shellhammer, Steve [mailto:sshellha@qualcomm.com]
> > Sent: Tuesday, May 30, 2006 10:33 PM
> > To: Rainer Hach; Sheung Li
> > 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
> > 
> > 
> > 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
> > > >>  
> > > >> 
> > > > 
> > > 
> > > 
> > 
>