I'm having the same problem with RocketAC. I'm trying to plan a link and can't even figure how much capacity I can get at that distance with the existing noise floor. It makes it hard to select the right tool for the job without all the info.
-Ty On Mon, Jan 12, 2015 at 2:00 PM, Mike Hammett <[email protected]> wrote: > Matt, that doesn't really help. > > In many areas, my noise/interference/whatever is -75. If I knew how much > margin was required per modulation, I could figure out how much signal I > need for that speed. > > I can't do that with your published numbers. > > > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > ----- Original Message ----- > From: Matt Hardy <[email protected]> > To: [email protected] > Sent: Mon, 12 Jan 2015 12:42:52 -0600 (CST) > Subject: Re: [AFMUG] Af5 > > Hi Mike, > The numbers in our datasheet do convey the SNR (which assumes AWGN for > noise value); this is pretty standard among all our datasheets. > The noise floor value varies based on channel BW, so a rough estimate for > noise floor would be (50MHz=-97dBm, 40=-98dBm, 30=-99dBm, 20=-101dBm, > 10=-104dBm). > > As far as transmit power / modulation, all modulations up to 64QAM can run > at full transmit power. 256QAM is ~2dB lower, and 1024QAM is something like > 4dB lower (it depends on other external factors). > > All of this and more is already provided with the integrated link > configuration tool, including channel bandwidth, duplex frequency spacing, > TX power and a bunch of other stuff. It's recommended to use this tool to > configure links because of all of the additional factors. > > But if you need to run a simple link calc to estimate a link's performance > at certain distance, you should have enough info. > > Hope that helps... > > -Matt > > > On Sat, Jan 10, 2015 at 10:06 AM, Mike Hammett <[email protected]> wrote: > > > Not at all, Matt. Those are receive sensitivities. > > > > > > The left side of this picture is needed for the airFibers. You publish > the > > right side only. > > > > > > This information is also not available for the airFibers. > > > > > > > > ----- > > Mike Hammett > > Intelligent Computing Solutions > > http://www.ics-il.com > > > > ------------------------------ > > *From: *"Matt Hardy" <[email protected]> > > *To: *[email protected] > > *Sent: *Friday, January 9, 2015 5:34:43 PM > > *Subject: *Re: [AFMUG] Af5 > > > > This? > > [image: Inline image 1] > > > > On Thu, Jan 8, 2015 at 5:18 PM, Mike Hammett <[email protected]> wrote: > > > >> Hard to tell because they won't publish their Tx and SNR requirements. > >> I'd just make educated guesses and plug it into a path calc. > >> > >> BTW: Ben, Matt... where are those numbers? > >> > >> > >> > >> ----- > >> Mike Hammett > >> Intelligent Computing Solutions > >> http://www.ics-il.com > >> > >> ------------------------------ > >> *From: *"Craig House" <[email protected]> > >> *To: *[email protected] > >> *Sent: *Thursday, January 8, 2015 3:24:58 PM > >> *Subject: *[AFMUG] Af5 > >> > >> I have used some AF 24 hours but no AF5 for backhaul yet what is the max > >> distance people are seeing for the AF 5 at full modulation > >> > >> Sent from my iPhone > >> > >> > > > > > >
