Re: [STDS-802-16-MOBILE] Regarding Pilots Overlapping
Hi Ran,
Once Comment#342 is accepted then it will be automatically adopted in
16e. Therefore I don't think you need to submit another one in TGe.
If you take a look at Table 309, VariableSets are defined in even
subcarrier numbers. If ConstantSets are defined in even numbers, then
Vriable and Constant Sets will never be overlapping.
Regards,
Sean
-----Original Message-----
From: Ran Yaniv [mailto:ran.yaniv@alvarion.com]
Sent: Friday, October 29, 2004 3:20 PM
To: 'scai@ztesandiego.com'
Subject: RE: [STDS-802-16-MOBILE] Regarding Pilots Overlapping
Hi Sean,
Thanks, I looked at comment #342, and it addresses the problem. A
similar
comment should be submitted to TGe for the sub-2K FFT modes. I can
submit a
comment of this nature.
btw, in comment #342 you mention that "odd numbers are preferred for
Constant Set". why is that?
Regards,
Ran
-----Original Message-----
From: Sean Cai [mailto:scai@ztesandiego.com]
Sent: Fri 29 October 2004 23:13
To: Ran Yaniv; STDS-802-16-MOBILE@listserv.ieee.org
Subject: RE: [STDS-802-16-MOBILE] Regarding Pilots Overlapping
Hi Ran,
We have noticed this problem in the D5, and have submitted the comment
(Comment# 342) to the Corrigenda in the last meeting. Please take a look
at it to see whether it addresses the problem you mentioned.
Regards,
Sean Cai
ZTE
-----Original Message-----
From: owner-stds-802-16-mobile@listserv.ieee.org
[mailto:owner-stds-802-16-mobile@listserv.ieee.org] On Behalf Of Ran
Yaniv
Sent: Friday, October 29, 2004 1:56 AM
To: STDS-802-16-MOBILE@listserv.ieee.org
Subject: Re: [STDS-802-16-MOBILE] Regarding Pilots Overlapping
Hi Yossi,
Sorry to disagree. Take the the 2K mode for example - there are 1702
active
subcarriers which should account for 1536 data subcarriers + pilots.
When
the overlap occurs, you have 1544 remaining subcarriers after you
allocate
pilots (see section 8.4.6.1.2.2.2). How would you allocate these extra 8
subcarriers to data subchannels?
I would either not transmit them and leave nulls (negligible power
gain), or
transmit them as.. pilots.
thanks
Ran
-----Original Message-----
From: Yossi Segal [mailto:yossis@RUNCOM.CO.IL]
Sent: Fri 29 October 2004 10:27
To: STDS-802-16-MOBILE@listserv.ieee.org
Subject: Re: [STDS-802-16-MOBILE] Regarding Pilots Overlapping
Hi Varma,
The overlapping is not by mistake.
By using this overlapping you may use the same pilot for estimation/AFC
etc.
without
Adding more non overlapping pilots, and without increasing the number of
subcarriers used.
Same method is also used in the DVB-T (EN 300744).
Regards,
Yossi
-----Original Message-----
From: owner-stds-802-16-mobile@listserv.ieee.org
[mailto:owner-stds-802-16-mobile@listserv.ieee.org] On Behalf Of varma
indukuri
Sent: Friday, October 29, 2004 7:58 AM
To: STDS-802-16-MOBILE@listserv.ieee.org
Subject: [STDS-802-16-MOBILE] Regarding Pilots Overlapping
hi all
I am seeing the same problem in 16e also for the "1024-FFT OFDMA
downlink
carrier allocations - FUSC". Table 309a from "802.16e/D5"
standard.
The variable pilots at the locations 324,336,516,520 are overlaping with
330,342,522,526 constant pilots. Perhaps I am mistaken.Plz intimate me
if
you find some solution for this Regards, varma ivs
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