Re: [Starlink] Intro and a question

[Mike Puchol <mike@starlink.sx>]

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I won’t pound on the dead donkey too much, Dick is way above my pay grade on this one, but I’ll just add that multiple polarization schemes were explored in the LTE world when they wanted to move from 2x2 MIMO (achieved with cross-polarized antennas) to 4x4 and higher orders. They just couldn’t make it work, so efforts were abandoned - it’s too hard to achieve the physical separation the “invention” claims through any practical means, which is where Carlos goes into “… and I’ll need a big pocketed investor to prove this works”. Billions have been spent on research for CDMA, LTE and 5G, and nothing in the polarization space has ever been marginally achieved.

Then, considering you only have a single path between a satellite and a ground station, any claims of higher-order MIMO through physical separation are void.

Best,

Mike
On Jul 28, 2021, 02:00 +0200, Dick Roy <dickroy@alum.mit.edu>, wrote:
> Even better, this guy's BS goes back to the late 80's when Qualcomm was
> promising 1000 times AMPS in cellular capacity with their new CDMA
> technology! Fast forward, CDMA has disappeared from planet earth as a
> cellular technology ... and 3 major telecommunications manufacturers are out
> of business!!
>
> RR
>
> -----Original Message-----
> From: Starlink [mailto:starlink-bounces@lists.bufferbloat.net] On Behalf Of
> Karl Auerbach
> Sent: Tuesday, July 27, 2021 4:09 PM
> To: starlink@lists.bufferbloat.net
> Subject: Re: [Starlink] Intro and a question
>
>
> On 7/26/21 8:51 PM, Larry Press wrote:
>
> >
> https://spacenews.com/tech-breakthrough-morphs-gigabit-wifi-into-terabit-sat
> ellite-internet/
> >
> <https://spacenews.com/tech-breakthrough-morphs-gigabit-wifi-into-terabit-sa
> tellite-internet/>
>
> Wow! I got massive deja vu and thought had to check whether I was
> reading a 1970's copy of the JC Whitney Catalog!
>
> (Or my own CaveBear Catalog - of hyperbolic bogus network stuff: "If we
> have it, you don't need it"), most particularly:
>
> - Our Press Release from one of the Interop shows, people actually
> believed this!! Gaga Net:
> https://www.cavebear.com/cb_catalog/techno/gaganet/ )
>
> - The Maximum Momentum Router:
> https://www.cavebear.com/cb_catalog/current/maxmoment/
>
> (For those who don't remember, the JC Whitnet catalog was filled with
> things for your car that would improve gas milage by a zillion percent
> or bump horsepower by 200hp. With that catalog one could turn an old
> 1200cc VW bug into a flame breathing monster, or so one would if one
> accepted the hyperbole.)
>
> OK, let's accept this guy's claims as true. Do they make an end-to-end
> difference?
>
> Perhaps if the satellite part of the end-to-end path is truly a bit
> synchronous "bent-pipe". But Starlink seems to be evolving far past
> that simple bit-clocked-circuit model into something more resembling a
> space internet with routers, or at least a switched network that could
> have issues such as choice of route, multiple inputs feeding into one
> output (in other words, potential congestion).
>
> BTW, I did like the article's phrase "High Definition Internet" - It
> immediately called to mind "Brawndo - it's got electrolytes" (from the
> movie Idiocracy.
>
> --karl--
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