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Re: [Discuss-gnuradio] Log raw data from the usrp_spectrum_sense.py

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] Log raw data from the usrp_spectrum_sense.py
Date: Thu, 04 Dec 2014 17:47:45 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0

Hello Leo,

with the USRP source you can get as much bandwidth at once as your
sampling rate allows, and it will give you the complex samples. The USRP
source will give you all the instantaneous bandwidth the USRP delivers
to your PC. You won't see more at once when using usrp_spectrum_sense,
as it internally uses the very same USRP source.

I don't know which USRP model you are currently using, but all but the
USRP1/b100/e1x0 will do enough bandwidth to allow you to monitor a WiFi
channel at once, as long as your PC is fast enough.


On 12/04/2014 02:20 PM, Leo Yang wrote:
> when u said:save the signal from a USRP to a file, that's a two 
> block flow graph in the GNU Radio companion: Just connect the USRP 
> Source to a File Sink, parameterize both to your likings, and you're done. 
> the two block flow graph can only use for narrow band, my idea is to sensing
> the wide band signal, such as Wi-Fi, and get the complex sample. 

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