[190675] in North American Network Operators' Group
Re: [AFMUG] Mimosa B11 Tx power at varying modulations
daemon@ATHENA.MIT.EDU (Eric Kuhnke)
Mon Jul 18 18:58:14 2016
X-Original-To: nanog@nanog.org
In-Reply-To: <CAB69EHg-xJh1NZdU1FvKGH9hQ3WutPJpALfeTe15Lqn4us6QWQ@mail.gmail.com>
From: Eric Kuhnke <eric.kuhnke@gmail.com>
Date: Mon, 18 Jul 2016 15:56:03 -0700
To: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Apologies for that, it went to the wrong list. While the OSI layer 1
characteristics of new PTP microwave bridges are undoubtedly fascinating,
such discussion may be a little too fine grained for network operational
lists.
On Mon, Jul 18, 2016 at 3:52 PM, Eric Kuhnke <eric.kuhnke@gmail.com> wrote:
> I found this as well, which is very helpful. Wish more radio manufacturer=
s
> 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 an=
d
> 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 modu=
lation
>> 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-Fo=
under
>>
>> 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 =
its
>> Tx power at QPSK modulation or something.
>>
>> I am doubtful it's +27 at 256QAM with a low-overhead-percentage code rat=
e.
>>
>> https://www.mimosa.co/uploads/docs/Mimosa-B11-Datasheet.pdf
>>
>> Is it +17, +18 or +19 Tx at 256QAM?
>>
>>
>>
>
