RE: stds-80220-requirements: Antenna Diversity Requirement, 4.1.12
Dear Khurram,
I don't understand your argument for requiring that 802.20 terminals have
antenna diversity. As you stated, existing systems have these capabilities
in the pipeline. Therefore, in the future there will be mobile terminals
with and without antenna diversity. I don't believe that existing systems
will stop supporting terminals with a single antenna. As you know, market
needs vary for many reasons in different places and with different market
segments, often requiring tradeoffs between performance, cost and other
factors
like terminal size. I believe what Kimura-san is proposing is that 802.20
support
having terminals with multiple antennas, but that terminals with single
antennas would also be allowed. This seems extremely reasonable and it
should be in both the operators' and the consumers' interest. I also
support
Samir's proposal to use the term "multi-antenna processing" instead of
antenna
diversity as it is broader in scope.
Best regards,
Joanne Wilson
ArrayComm, Inc.
joanne@arraycomm.com
-----Original Message-----
From: owner-stds-80220-requirements@majordomo.ieee.org
[mailto:owner-stds-80220-requirements@majordomo.ieee.org]On Behalf Of
Sheikh, Khurram P [GMG]
Sent: Friday, August 08, 2003 12:19 AM
To: shigeru kimura; 802-20 IEEE requirements list
Subject: RE: stds-80220-requirements: Antenna Diversity Requirement,
4.1.12
Dear Mr. Kimura
I have to disagree with your notion of not putting a minimum requirement
on antenna diversity. Current generation systems have these capabilities
in the pipeline, so it seems very illogical not to shoot for higher
performance by putting at least a minimum requirement for antenna
diversity.
Bets Regards
Khurram P. Sheikh
Chief Technology Advisor
Sprint- Broadband Wireless
Tel (SM): 650-513-2056
Tel(KC): 913-762-1645
Mobile: 650-906-8989
khurram.p.sheikh@mail.sprint.com
-----Original Message-----
From: shigeru kimura [mailto:shigeru_kimura@csg.kyocera.co.jp]
Sent: Thursday, August 07, 2003 10:23 PM
To: 802-20 IEEE requirements list
Cc: Shigeru_Kimura@csg.kyocera.co.jp
Subject: stds-80220-requirements: Antenna Diversity Requirement, 4.1.12
Dear ALL
This is Shigeru Kimura.
I want to propose to remove the section 4.1.12 of Rev 5.
Section 4.1.12 - Antenna Diversity
Current text
At a minimum, both the Base Station and the Mobile Terminal shall
provide two element diversity. Diversity may be an integral part of
an advanced antenna solution.
Proposed New text
N/A(Delete section)
Rationale
Support for multiple antenna capability is described section 4.1.11.
Section 4.1.12 defines a minimum antenna number for
Base Station and Mobile Terminal.
There is a contradiction between 4.1.11 and 4.1.12.
Only section 4.1.11 description is enough for multiple antenna
capability I
think.
And the antenna number of Mobile Terminal should not be defined in the
Requirements Document.
The important thing is the system performance with cost.
Thank you.
Kimura