The size of the guard
bands is dependant on the technology selection and the regulatory environment,
thus it is not possible to define the size of the guard bands at this point.
The only thing that we can do is assume that the guard bands are located
outside the proposed blocks sizes.
Closing out the
section on Block Sizes does not preclude a discussion on channel
BW's.
John J.
Humbert
6220 Sprint Parkway
Mailstop KSOPHD0504 - 5D276
Overland Park, KS 66251-6118
PCS (816) 210-9611
-----Original
Message-----
From: Shively,
David [mailto:david.shively@cingular.com]
Sent: Friday, November 21, 2003 2:48
PM
To: Humbert,
John J [NTWK SVCS]; stds-80220-requirements@ieee.org
Subject: Requirements document - Block
size and spectral efficiency
Hi John,
I noticed on your spreadsheet that the section on
block size is
due
to be closed. However, several of my comments on spectral
efficiency are
also applicable to the issue of block size. It
seems that there are still several
differing opinions on the
block/channel requirements. This issue was also
addressed in the
Albuquerque meeting by Lucent (contribution #105) and
also by
Sprint
(contribution #112r1).
I am still unclear whether or not the block sizes
indicated
(e.g.
1.25 MHz and 5 MHz) include the necessary guard bands. For
example, if a block size of 5
MHz is used does this mean that I
can deploy this system in a 5 MHz licensed spectrum
block such
as the
US PCS D, E, and F blocks or the C and D blocks in the
recently announced Advanced Wireless
Services spectrum ? If so,
then clearly this 5 MHz block must include the
guardbands. Or, does
this mean the the actual RF carrier is intended to
occupy the entire
5 MHz wide and extra guard bands will be
needed?
What about 1.25 MHz blocks? Does this mean the
actual RF carrier
bandwidth is 1.25 MHz or does the 1.25 MHz block
already include
guard bands?
If block size is used in the calculation of spectral
efficiency,
then
it should be done in a consistent way. Either use a block
size
that
includes the guard bands or use the applicable RF carrier
bandwidth and
include a definition of how carrier bandwidth is
calculated.
Best regards,
David Shively
-----Original Message-----
From: Humbert, John J [NTWK SVCS] [mailto:JHumbe01@sprintspectrum.com]
Sent: Tuesday, November 18,
2003 8:06 PM
To:
stds-80220-requirements@ieee.org
Subject: stds-80220-requirements: Requirements doc
status 11_12_03.xls
Attached is an excel spreadsheet showing the status of
each section.
There are a number of sections that are pending
closure because they
were discussed at the Plenary meeting or there has
been no activity for
more than 5 days.
<<Requirements doc status
11_12_03.xls>>