[190674] in North American Network Operators' Group
Re: [AFMUG] Mimosa B11 Tx power at varying modulations
daemon@ATHENA.MIT.EDU (Eric Kuhnke)
Mon Jul 18 18:52:07 2016
X-Original-To: nanog@nanog.org
In-Reply-To: <etPan.578d4dd5.1ce1fc3.13727@mimosa.co>
From: Eric Kuhnke <eric.kuhnke@gmail.com>
Date: Mon, 18 Jul 2016 15:52:03 -0700
To: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
I found this as well, which is very helpful. Wish more radio manufacturers
were as clear about this in the spec sheet:
http://backhaul.help.mimosa.co/backhaul-faq-maximum-tx-power-details
In one channel, two chains, it's +24, if using two channels and four chains
+21 Tx power. Then it's possible to manually do the link budget and path
loss calculations based on that (or plug Tx power dBm + dBi gain for
preliminary PTP link calculations into something like Radio Mobile).
On Mon, Jul 18, 2016 at 2:44 PM, Jaime Fink <jaime@mimosa.co> wrote:
> Eric, I think you=E2=80=99re more looking for SNR required for each modul=
ation
> coding rate, which care listed here:
>
> http://backhaul.help.mimosa.co/backhaul-faq-snr-mcs
>
> Cheers,
>
> Jaime Fink =E2=80=A2 Mimosa <http://www.mimosa.co> =E2=80=A2 CPO & Co-Fou=
nder
>
> On July 15, 2016 at 10:56:20 AM, Eric Kuhnke (eric.kuhnke@gmail.com)
> wrote:
>
> Trying to manually do a link budget/path loss/rain fade calculation for a
> possible long B11 link...
>
> Does Mimosa have a table of Tx power vs. modulation level published
> somewhere? The datasheet just says +27 Tx power, which I am guessing is i=
ts
> Tx power at QPSK modulation or something.
>
> I am doubtful it's +27 at 256QAM with a low-overhead-percentage code rate=
.
>
> https://www.mimosa.co/uploads/docs/Mimosa-B11-Datasheet.pdf
>
> Is it +17, +18 or +19 Tx at 256QAM?
>
>
>
