For that to work well, you probably need (a) clear LOS (b) no foliage (c) no multipath (d) mid or high band freq and (e) CPE at various heights (like downtown office building) so you can use 3D beamforming. I’m not saying it won’t work, but you won’t get anything near 64x capacity increase. I think I was reading numbers like 5x.
My gut tells me you can’t beamsteer with that precision at sub 1 GHz frequencies. But nobody said all 64 elements are in the same band either. From: AF <[email protected]> On Behalf Of Mike Hammett Sent: Monday, September 14, 2020 1:29 PM To: AnimalFarm Microwave Users Group <[email protected]> Subject: Re: [AFMUG] Cell signals. 64x64 massive MIMO (like Cambium Medusa's 14x14) in each 120 degree sector. ----- Mike Hammett <http://www.ics-il.com/> Intelligent Computing Solutions <https://www.facebook.com/ICSIL> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> <https://www.linkedin.com/company/intelligent-computing-solutions> <https://twitter.com/ICSIL> <http://www.midwest-ix.com/> Midwest Internet Exchange <https://www.facebook.com/mdwestix> <https://www.linkedin.com/company/midwest-internet-exchange> <https://twitter.com/mdwestix> <http://www.thebrotherswisp.com/> The Brothers WISP <https://www.facebook.com/thebrotherswisp> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> _____ From: "Ken Hohhof" <[email protected] <mailto:[email protected]> > To: "AnimalFarm Microwave Users Group" <[email protected] <mailto:[email protected]> > Sent: Sunday, September 13, 2020 9:02:48 PM Subject: Re: [AFMUG] Cell signals. That must mean something different than I was thinking. Like 64 time slices for different traffic, or dividing the 360 degrees into 64 antenna beams. From: AF <[email protected] <mailto:[email protected]> > On Behalf Of Mike Hammett Sent: Sunday, September 13, 2020 8:11 PM To: AnimalFarm Microwave Users Group <[email protected] <mailto:[email protected]> > Subject: Re: [AFMUG] Cell signals. Sprint\T-Mo has done 64x64. ----- Mike Hammett <http://www.ics-il.com/> Intelligent Computing Solutions <https://www.facebook.com/ICSIL> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> <https://www.linkedin.com/company/intelligent-computing-solutions> <https://twitter.com/ICSIL> <http://www.midwest-ix.com/> Midwest Internet Exchange <https://www.facebook.com/mdwestix> <https://www.linkedin.com/company/midwest-internet-exchange> <https://twitter.com/mdwestix> <http://www.thebrotherswisp.com/> The Brothers WISP <https://www.facebook.com/thebrotherswisp> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> _____ From: "Ken Hohhof" <[email protected] <mailto:[email protected]> > To: "AnimalFarm Microwave Users Group" <[email protected] <mailto:[email protected]> > 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 gigawattsbits 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 <[email protected] <mailto:[email protected]> > On Behalf Of Chuck McCown Sent: Sunday, September 13, 2020 6:54 PM To: AnimalFarm Microwave Users Group <[email protected] <mailto:[email protected]> > 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 <[email protected] <mailto:[email protected]> > wrote: When GSM began they started using vertical polarization. But as the need for capacity arose antennas changed to slant 45 X polarization. On Sep 13, 2020, at 5:51 PM, Jaime Solorza <[email protected] <mailto:[email protected]> > wrote: V On Sun, Sep 13, 2020, 3:48 PM Matt Hoppes <[email protected] <mailto:[email protected]> > wrote: Slant 45 > On Sep 13, 2020, at 4:51 PM, Chuck McCown <[email protected] > <mailto:[email protected]> > wrote: > > Are cell signals V pol? > > Sent from my iPhone > > -- > AF mailing list > [email protected] <mailto:[email protected]> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] <mailto:[email protected]> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] <mailto:[email protected]> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] <mailto:[email protected]> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] <mailto:[email protected]> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] <mailto:[email protected]> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
