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>>