Thread: MIMO and AAS
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Old October 2nd 07, 12:33 AM posted to sci.electronics.misc,comp.arch.embedded,sci.electronics.basics,rec.radio.shortwave,rec.radio.amateur.antenna
Richard Clark Richard Clark is offline
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Default MIMO and AAS

On Mon, 01 Oct 2007 15:04:16 -0700, karthikbalaguru
wrote:

MIMO delivers the same coverage as AAS


Hi Karthik,

Only with the qualification that AAS may be steered to the same points
of coverage of MIMO - and that is not always assured.

MIMO delivers higher capacity than AAS


What is capacity? There are counter-arguments (depending on
capacity's meaning, there are several) that would invert this claim.

MIMO is lower in complexity and cost than AAS


An engineering system solution is not always about one component cost.

MIMO is more scalable than AAS. MIMO is more predictable in
performance
and can grow through additional sectors and/or additional antennas


You should study the information and skip the claims you've heard.

MIMO works well in all environments (rural, suburban, urban),
switching modes to deliver users the best experience.


This is not an antenna issue.

MIMO outperforms AAS for mobile applications: MIMO maintains
performance at speed and provides a predictable environment for easier
and
more reliable hand-offs.


If AAS is boresight along a transportation corridor, this is no longer
true.

MIMO is the basis for all 4G plans- widespread investment in
developing
MIMO technologies will ensure advantages are maintained.


It's only advantage in this list you've constructed.

So, it looks like in all aspects, MIMO is equal to or superior to AAS


Look again - your PRO MIMO statements are far too under qualified.

73's
Richard Clark, KB7QHC