What is the latency of an unladen swallow? -Ty
On Mon, Oct 27, 2014 at 8:20 AM, Jaime Solorza via Af <af@afmug.com> wrote: > What do you mean? African or European? > > Jaime Solorza > On Oct 26, 2014 1:19 PM, "Chuck Macenski via Af" <af@afmug.com> wrote: > >> I would agree that, at the moment, OFDM techniques dominate the >> discussion... >> >> On Sun, Oct 26, 2014 at 11:59 AM, Chuck McCown via Af <af@afmug.com> >> wrote: >> >>> Yeahbut, it appears QAM has won? Yes? >>> LTE doesn’t have much in common with CDMA anymore. >>> >>> *From:* Chuck Macenski via Af <af@afmug.com> >>> *Sent:* Saturday, October 25, 2014 2:43 PM >>> *To:* af@afmug.com >>> *Subject:* Re: [AFMUG] Holy Grail >>> >>> Actually...CDMA techniques (PN modulation) re-channel a band based on >>> time rather than frequency. In a multi point environment, this allows >>> multiple people to share a frequency bandwidth in a not terribly >>> inefficient way when all of the simultaneous communication paths are >>> considered. >>> >>> On Sat, Oct 25, 2014 at 12:44 PM, Chuck McCown via Af <af@afmug.com> >>> wrote: >>> >>>> Yeah, isochronous pseudorandom noise mod/demod techniques will pull >>>> info from sewer. I think the deep space network uses some of those >>>> techniques. But PN modulation does not help throughput. It wastes >>>> bandwidth. >>>> >>>> Speed/interference immunity/narrow channels – pick one. >>>> >>>> *From:* Bill Prince via Af <af@afmug.com> >>>> *Sent:* Saturday, October 25, 2014 11:27 AM >>>> *To:* af@afmug.com >>>> *Subject:* Re: [AFMUG] Holy Grail >>>> >>>> The holy grail would be the ability to modulate a signal and receive >>>> it correctly in the face of withering interference. >>>> >>>> The GPS system accomplishes that through the technique of encoding the >>>> data within "pseudo noise". The only problem being that GPS data is >>>> relatively static compared to what we deal with. >>>> >>>> >>>> bp >>>> >>>> On 10/25/2014 10:15 AM, Chuck McCown via Af wrote: >>>> >>>> I think folks without deep experience in either 1) operating a WISP >>>> or 2)without deep experience in electrodynamics and modulation (99.999% of >>>> the general population) somehow think that Moore’s Law applies to >>>> wireless. >>>> >>>> The only way to scale this this stuff in a way approximating Moore’s >>>> Law is to just keep adding cell/ap sites. >>>> >>>> I read a book back in 1990 that outlined this problem for the nascent >>>> cell phone industry. The book is still spot on. >>>> >>>> *From:* Rory Conaway via Af <af@afmug.com> >>>> *Sent:* Friday, October 24, 2014 11:41 PM >>>> *To:* af@afmug.com >>>> *Subject:* Re: [AFMUG] Holy Grail >>>> >>>> >>>> Or looky, looky, AC PTMP MU-MIMO. Imagine what that would do for White >>>> Space. >>>> >>>> >>>> >>>> Rory >>>> >>>> >>>> >>>> *From:* Af [mailto:af-boun...@afmug.com <af-boun...@afmug.com>] *On >>>> Behalf Of *That One Guy via Af >>>> *Sent:* Friday, October 24, 2014 10:22 PM >>>> *To:* af@afmug.com >>>> *Subject:* Re: [AFMUG] Holy Grail >>>> >>>> >>>> >>>> Sterling, thank you! I think you and me must be the only ones who can >>>> see the elephant...... OH LOOKY LOOKY AC PTMP!! >>>> >>>> >>>> >>>> On Fri, Oct 24, 2014 at 9:09 PM, Sterling Jacobson via Af <af@afmug.com> >>>> wrote: >>>> >>>> Is it just me, or is no one realizing that we are still not that far >>>> from 2005 with wireless. >>>> >>>> >>>> >>>> Yes, we have 300-1Gbps capable radios. >>>> >>>> But they trade that for larger channel allocations and even more signal >>>> to noise requirements. >>>> >>>> >>>> >>>> But the spectrum allocations haven’t changed enough to use these new >>>> features to their fullest in a radio dense environment. >>>> >>>> >>>> >>>> When doing cost analysis in my area last year for wireless I realized I >>>> had to forklift upgrade most of my network, and build towers out in a half >>>> mile range. >>>> >>>> >>>> >>>> This was to get the 30Mbps plan rates to really work. >>>> >>>> >>>> >>>> The costs were skyrocketing because of all the towers and sectors. >>>> >>>> >>>> >>>> I think the real winners of late are still the rural and low density >>>> wireless provider domains. >>>> >>>> They are the ones with clean enough spectrum to cost this competitively. >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> *From:* Af [mailto:af-boun...@afmug.com] *On Behalf Of *Jaime Solorza >>>> via Af >>>> *Sent:* Friday, October 24, 2014 6:41 PM >>>> *To:* Animal Farm >>>> *Subject:* Re: [AFMUG] Holy Grail >>>> >>>> >>>> >>>> Bring out the Holy Grenade of Antioch... >>>> >>>> Jaime Solorza >>>> >>>> On Oct 24, 2014 5:56 PM, "Jayson Baker via Af" <af@afmug.com> wrote: >>>> >>>> Anyone else get this email? >>>> >>>> >>>> >>>> Anyone know what it is? >>>> >>>> >>>> >>>> >>>> >>>> -- >>>> >>>> All parts should go together without forcing. You must remember that >>>> the parts you are reassembling were disassembled by you. Therefore, if you >>>> can't get them together again, there must be a reason. By all means, do not >>>> use a hammer. -- IBM maintenance manual, 1925 >>>> >>>> >>>> >>> >> >>
