Not really wrong, it just takes different thinking than microwave design 5 or 7 years ago. I can see 4096QAM being very useful for short distance high capacity 18 and 23 GHz PTP that are paths too long for 80 GHz.
But "most of the time" can be two or three nines, while it will actually be 1024QAM or better at five nines. Used in an IP network between routers the OSPF configuration and network topology has to be designed with the understanding that a link might only have 12dB of fade margin before it's no longer full data rate. For example if a link when properly aimed on a clear sunny day is at -37, and it needs -49 to operate at 4096QAM. That's a *lot* less fade margin between -37 and "no longer runs at full speed", when you compare to a 1024QAM 5/6 code rate link that might also be aimed properly at -37, and no longer be full speed when the RSL reaches -62. On Wed, Apr 5, 2017 at 3:58 PM, Mike Hammett <[email protected]> wrote: > I don't see anything wrong with that. The product can do it and will do it > most of the time. > > > > ----- > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > <https://www.facebook.com/mdwestix> > <https://www.linkedin.com/company/midwest-internet-exchange> > <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > <https://www.facebook.com/thebrotherswisp> > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > ------------------------------ > *From: *"Eric Kuhnke" <[email protected]> > *To: *[email protected] > *Sent: *Wednesday, April 5, 2017 5:53:34 PM > *Subject: *Re: [AFMUG] Anyone familiar with the highest capacity > Microwave Radio Ever? > > To be pedantic they said microwave, not millimeter wave. In 80 GHz it's > cool to use things like 1000/2000 MHz wide FDD channel band plan and QPSK > modulation. Squeezing a lot of data into a 2 x 112 MHz ETSI band plan > microwave channel is a big more of a challenge. > > But I think it's silly to advertise things at their 4096QAM capacities, if > you look at the RSL thresholds that are required to actually operate at > 4096QAM vs 1024QAM. Like, you need -48 to actually be in 4096, maybe -61 or > -62 to be at 1024QAM. > > > > On Wed, Apr 5, 2017 at 12:54 PM, <[email protected]> wrote: > >> What alternative reality is this ad from? There are a few 10 Gbps radios >> out there. >> >> Jared >> >> >> >> Sent: Wednesday, April 05, 2017 >> From: "Rory Conaway" <[email protected]> >> To: "[email protected]" <[email protected]> >> Subject: [AFMUG] Anyone familiar with the highest capacity Microwave >> Radio Ever? >> >> WTM 4000 >> >> http://s214106484.t.en25.com/e/es?s=214106484&e=2613&elqTrackId= >> 4956d41eca78444a9dd67ae96217210b&elq=ec8b41f8c57a4a11b26adb87413163 >> 57&elqaid=334&elqat=1 >> >> Rory Conaway • Triad Wireless • CEO >> 4226 S. 37th Street • Phoenix • AZ 85040 >> 602-426-0542[tel:602-426-0542] >> [email protected][mailto:[email protected]] >> www.triadwireless.net[http://www.triadwireless.net/] >> >> “First rule of Racing, whats behind you does not count.” – Gregory White >> >> > > >
