On 05/09/2019 03:01 PM, Brian Padalino via USRP-users wrote:
I'd much prefer to see an IQ constellation diagram. For OFDM it'll
just look like a big Gaussian meatball unless you hit some clipping or
weirdness, then you'll see it square up or look strange.
Brian
If "Big Gaussian Meatball" i
n of saturation?
Thanks,
Mike
*From:* Brian Padalino
*Sent:* Wednesday, May 8, 2019 6:11 PM
*To:* Michael Deacon
*Cc:* usrp-users@lists.ettus.com
*Subject:* Re: [USRP-users] Relationship between IQ values, gain and
noise on B205mini transmitter
What does the signal look like in the time domain?
On Thu, May 9, 2019 at 1:03 PM Michael Deacon wrote:
> I hope this is what you are looking for. Would clipping here be an
> indication of saturation?
>
Not quite. You may be able to look at the CCDF of the output and see if it
hits a brick wall versus the "good" picture.
I'd much prefer to see
gt;
> Mike
>
>
>
> *From:* Brian Padalino
> *Sent:* Wednesday, May 8, 2019 4:37 PM
> *To:* Michael Deacon
> *Cc:* usrp-users@lists.ettus.com
> *Subject:* Re: [USRP-users] Relationship between IQ values, gain and
> noise on B205mini transmitter
>
>
>
> On
I added some attenuation. The overload is gone but the condition persists.
Thanks,
Mike
From: Brian Padalino
Sent: Wednesday, May 8, 2019 4:37 PM
To: Michael Deacon
Cc: usrp-users@lists.ettus.com
Subject: Re: [USRP-users] Relationship between IQ values, gain and noise on
B205mini
On Wed, May 8, 2019 at 7:28 PM Michael Deacon via USRP-users <
usrp-users@lists.ettus.com> wrote:
> Hello,
>
>
>
> I have a simple transmitter consisting of a file source connected to a
> USRP sink (attached image radio.png). The file contains interleaved
> floating point IQ representing a few sec