Sprint\T-Mo has done 64x64.
----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ----- Original Message ----- From: "Ken Hohhof" <af...@kwisp.com> To: "AnimalFarm Microwave Users Group" <af@af.afmug.com> Sent: Sunday, September 13, 2020 7:13:45 PM Subject: Re: [AFMUG] Cell signals. I still can’t wrap my head around how they get ∞x∞ MIMO and 1.21 giga watts bits from 5 MHz of spectrum. I understand MU-MIMO and beamsteering and all that, but when they start tossing around stuff like 8x8 MIMO I don’t see how you get that many orthogonal signals on the same frequency. But for maximum spectral efficiency, I assume they use more than 1 polarization, whether V&H or +45 & -45. From: AF <af-boun...@af.afmug.com> On Behalf Of Chuck McCown Sent: Sunday, September 13, 2020 6:54 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Subject: Re: [AFMUG] Cell signals. I have a passive antenna experiment in the works. Rather than guess at the right slant, I think I will try V pol initially. Sent from my iPhone On Sep 13, 2020, at 4:12 PM, Matt Hoppes < mattli...@rivervalleyinternet.net > wrote: <blockquote> When GSM began they started using vertical polarization. But as the need for capacity arose antennas changed to slant 45 X polarization. <blockquote> On Sep 13, 2020, at 5:51 PM, Jaime Solorza < losguyswirel...@gmail.com > wrote: </blockquote> <blockquote> V On Sun, Sep 13, 2020, 3:48 PM Matt Hoppes < mattli...@rivervalleyinternet.net > wrote: <blockquote> Slant 45 > On Sep 13, 2020, at 4:51 PM, Chuck McCown < ch...@wbmfg.com > wrote: > > Are cell signals V pol? > > Sent from my iPhone > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com </blockquote> -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com </blockquote> -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com </blockquote> -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
