Clearwire: Just Say No

[Yournet@hotmail.com]

Hi Steve,

Wave 2 certified WiMAX mobile systems will start to be available in the 
second half.  But some elements to the system will continue to rapidly 
evolve: Both WiMAX and LTE are attempting to be 'evolutionary platforms' 
that will include evolution of MIMO-AAS and 'smart wireless broadband 
networking' technologies.  The core modulation and other low-level methods 
will continue to mature, but much of the creative work is taking place in 
the higher level smart antenna system, smart networking methods, and network 
management, roaming, authentication and payment systems. And many subscriber 
units are being certified (about 120 altogether) including the 'ultra 
portable laptop' class devices.

There is work being done now on 'WiMAX II'.  What that is exactly is still 
in flux (as is LTE).  It will be a culmination of MIMO-AAS, smart 
networking, plus perhaps a new version PHY and MAC that uses modified SOFMDA 
and organized methods to use sub-channelization and other schemes dedicated 
to unicast/multicast video and other types of data in a more directly 
optimized fashion.  Of course, backward compatibility with 802.16e-2005 will 
be supported.

Bob

----- Original Message ----- 
From: "Steve Stroh" <steve at stevestroh.net>
To: "SeattleWireless Talk List" <talk at seattlewireless.net>
Sent: Thursday, February 01, 2007 2:00 PM
Subject: Re: Clearwire: Just Say No


>
> All true, but it seems likely that Clearwire will reserve a portion
> of their system capacity (spectrum, radios, towers, antennas, etc.)
> for providing service to customers with legacy devices and just wait
> for the customers to be attracted to the better performance of their
> mobile WiMAX systems (whenever they eventually are available).
>
>
> Thanks,
>
> Steve
>
>
> On Jan 26, 2007, at Jan 26  03:42 PM, Yournet at hotmail.com wrote:
>
>> Clearwire's current products are not 802.16 based. They are NextNet
>> (now
>> part of Motorola) OFDM-256 FFT TDD based.  I would be leary of
>> investint in
>> a PCMCIA card because of performance issues and the fact that they
>> will
>> eventually shift to 802.16e-2005 (WiMAX universal mobile version)
>> based
>> system similar to that to be deployed by Sprint-Nextel next year.
>> None of
>> Clearwire's current products will work or are upgradeable to
>> WiMAX.  There
>> will be at least two vendors who provide end use CPEs/SUs, USB
>> dongles and
>> PCMCIA cards that will work at both 2.3 GHz and 2.5 GHz  frequency
>> bands
>> used in the U.S., Korea, Singapore, Taiwan, and other regions as
>> well as
>> being able to operate (given roaming agreements of course) between
>> other
>> operators in 2.5 GHz band.
>>
>
> ---
>
> Steve Stroh
> 425-939-0076 | steve at stevestroh.net
> Writing about BWIA again! - www.bwianews.com
>
>
>
>
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