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Re: Stream args on UHD USRP Sink


From: Wheberth Damascena Dias
Subject: Re: Stream args on UHD USRP Sink
Date: Tue, 3 Dec 2019 14:11:30 -0300

Hi Marcus, I

I am planning to give a try to the GnuRadio 3.8 PPA. We are developing some OOT blocks and some rework may be needed to do so.

I will take a look at the code, but I am inclined to change my application to eliminate the need of scaling in real time (scalling the QAM symbols for example)

Regarding the USRP I am using a pair of X310.

Thank you very much.
Wheberth


Em ter, 3 de dez de 2019 13:26, Müller, Marcus (CEL) <address@hidden> escreveu:
Uhhhh that's an ancient version of GNU Radio. Do you use any other UHD-
linking software, or can you try our new PPA that would give you a
modern GNU Radio 3.8.0.0?

https://launchpad.net/~gnuradio/+archive/ubuntu/gnuradio-releases

Anyway, for most USRPs "fullscale" actually should do some scaling (if
you're so inclined, look for "_host_extra_scaling" in the UHD source
code).

What is the USRP you're using?

Best regards,
Marcus

On Tue, 2019-12-03 at 08:41 -0300, Wheberth Damascena Dias wrote:
> Hi all, not sure if I should send this here or at USRP list.
>
> I am trying to set the "fullscale" as a stream parameter of the USRP Sink block, but it have no effect. The idea is to avoid the use aof one block to scale the samples to [-1.0, +1.0] range May I be missing something?
>
> For reference I am using GnuRadio 3.7.11 with libuhd 3.10.3 (All stock from Ubuntu 18.04).
> Thank you very
>
>
>
> --
> Wheberth Damascena Dias
> _______________ _____ _____ __ ___ __ _ _ _  _
> http://www.linkedin.com/in/wheberth
> e-mail:address@hidden
>

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