[Rooftops] I assume

[Michael Kassner]

Hello, Mr. Turner

Interesting concept that is already playing out. I assume you are aware of
your fellow MIT alumni that are doing this exact thing in San Francisco:

http://sf.meraki.com/

Kind regards,

Michael P. Kassner
MKassner Net

On Wed, Dec 23, 2009 at 1:27 PM, Brough Turner <rbt at alum.mit.edu> wrote:

> If there is anyone left on this list who is still interested in Internet
> connectivity or wireless mesh networks, I'm an engineer/ entrepreneur
> investigating the feasibility of doing a wireless end run around the
> duopoly here in the US.  So far this is an investigation only - I'm not
> to the point of a business plan, but I'm getting rather optimistic.
>
> I'm looking for useful people to bounce ideas off.  I'm also running an
> event during IAP:  http://student.mit.edu/searchiap/iap-a194.html
>
> My theses:
>
> There is a 20x cost difference between Internet connectivity at a
> competitive IXP like One Summer Street in Boston and buildings even one
> block away.  This creates enough of a gap to support a services business
> based on a freemium business model and BYOC (bring your own capital,
> i.e. subscribers purchase mesh nodes).
>
> There's the potential for a 100x increment in mesh performance, at least
> in dense urban areas, because:
>   While 5 GHz is absorbed by masonry, there is significant difference
> in propagation through air or glass btwn 5 GHz, 2.4 GHz or 700 MHz.
>   MIMO makes 5 GHz more valuable than lower frequencies, at least in
> dense urban areas where MIMO is effective.
>   There's vastly more spectrum available at 5 GHz (11 - 40 MHz channels
> versus 3 - 20 MHz channels at 2.4 GHz).
>   DSP controlled beamforming significantly improves MIMO performance
>   DSP controlled beamforming achieves the performance and SDMA
> advantages of highly directional antennas without requiring professional
> or enthusiast installers.
>   802.11n today and 802.11ac in the future are leading silicon vendors
> to incorporate ever higher order MIMO and software controlled beamforming.
>
> If there is anyone here on this list who's interested in talking, my
> contact info is below.  (You're also welcome to attend the January 27th
> IAP event).
>
> Thanks,
> Brough
>
> Brough Turner
> Ashtonbrooke.com
> Mobile: +1 617 285-0433  Skype: brough
> Also:  broughturner at gmail.com
> Web:   http://www.broughturner.com/
> Blog:  http://blogs.broughturner.com/
>
>
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