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Questions tagged [usrp]

The USRP series of software-defined radio devices, designed and developed by Ettus Research, are commonly used with GNU Radio, OpenBTS, LabView, and Matlab. The driver, UHD, is also FOSS, so you can program the radios directly through the driver's API.

The Universal Software Radio Peripheral (USRP) series of devices is a Software-Defined Radio (SDR) platform. USRPs are designed and developed by Ettus Research in Santa Clara, California.

The term itself, 'USRP', encompasses all of the radio devices produced by Ettus Research, which include ethernet-based peripherals, USB-based peripherals, and embedded devices that are stand-alone.

The peripheral devices must be plugged into a host computer, from which they are programmed to transmit / receive as the user wishes. The embedded models run a full embedded Linux distribution, and can be used as radios on their own.

USRPs are commonly used with the GNU Radio framework to create complex SDR systems. Another popular usage model is using them as cellular base stations with OpenBTS.

The USRP Hardware Driver (UHD) supports all of the USRP models, and is Free and Open Source Software, released under the GPL.

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FFT in non-flowgraph centered application different from flowgraph centered apps like uhd_fft

I've written a small GNU Radio program to capture and plot FFT data from the USRP N210. To avoid locking up my GUI (matplotlib and wxpython), I am only running the flowgraph after the GUI reports that it's idle. In order to do that kind of timing,…
djanderson
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UHD USRP device lacks capacity

I'm using Redhawk 1.10.0 on a CentOS 6.5 machine 64 bit and USRP b100 with UHD driver 3.7.2. The USRP b100 is recognized correctly by the system. It is a USB device. I downloaded the latest version of UHD_USRP Device ver. 3.0 for REDHAWK and I…
Yoskini
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USRP on RedHawk

I'm trying to use a USRP platform (B100,USRP1 or B2x0) on Redhawk. I installed redhawk 1.9.0,uhd driver and usrp_uhd device on centOS6.5_x64, both virtual machine and native, and I made a node including USRP_UHD and GPP device, a simple component…
Biga
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gnuradio-companion flooding console with the letter D

I'm running a very simple flow graph in GNU Radio Companion, consisting of a USRP Source, which is connected to (1) a quadrature demod that is connected to a wxgui scope sink and (2) a wxgui fft sink. These display and draw the expected results, but…
Alex K
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GRC GNU Radio Companion freezes after 30 seconds when using USRP

I am using the GNU Radio Companion 3.6.4.1 in a Ubuntu 12.04 LTS as a virtual machine on Windows 8. I dowload a FM TX receiver example code from OZ9AEC and I run with the Ettus USRP N210. But when I run it, it just run for 30 seconds and then stop…
jluiz20
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REDHAWK UHD device usage

I have successfully installed the UHD device along side REDHAWK version 1.8.3. It isn't obvious to me how to connect a component in a waveform to a device being managed by a device manager. I am also unclear on the interplay between the IDL…
user2386792
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Cheetah installing error

I'm trying to install on my machine gnuradio and to do so I have to install another programs, according to this site. Everything goes well but when I have to install the cheetah dependency it gives me this error: c:\Python27\Scripts>easy_install…
user2262302
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SWIG/CMAKE build problems, trying to install and use new module in GNURadio

I'm trying to make a copy of the USRP Source block included in the UHD module of GNURadio, so that I can freely modify the work() function. For the moment, I'm just trying to make a block that works exactly like the "USRP Source" block. I made a…
Joel Spark
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Is there a better way to represent uint8 data

I have a question regarding the representation of the uint8 data. I have a MATLAB MAT file where uint8 data are saved. The MAT file is reading into Python using scipy.io.loadmat() and a dictionary is formed. The array corresponding to the data…
Sheng2012
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relation between FFT and IQ data

I have been studying how the USRP works and, particularly, how to sense the energy from a signal. So far, I have understood that the USRP sense IQ data, and then, process it applying FFT. (I have been looking at usrp_spectrum_sense.py ) What are…
xuandl
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Can I send a signal with a certain frequency and data rate using my android phone by changing in the kernel or by using GNU radio?

I want to transmit a certain data with a certain data rate and my USRP doesn't support this high rate so I'm thinking if I can by any way change my kernel ( 2.6.35.7) to make the mobile transmit signal, or are there any apps that can do this ? plz…
Zangetsu
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USRP2: Number of A/D Converters

Why are there two A/D converters on the USRP2 board if you can only use one RX daughtercard?
user19899
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Killerbee- LED glow issue

I am working on the Killerbee rzusb stick, mostly used to sniff/Listen data packets in radio platform. I would like to program this device according to my need. There are three LED's on the stick, can anyone suggest me the command to make them TURN…
Nity
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Diffrence between LO Tx and LO Rx of two B10 even connected to Octoclock

I have two B210 connected trough splitter. They both use external Octoclock REF and PPS. I have: |complex sine| -- |uhd sink| -- |b210| -- |splitter| -- |b210| -- |uhd source| When Rx B210 use only one channel there is no frequency difference…
Ivan Penchev Ivanov
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PS to PL on the X410

I have a few questions regarding the USRP X410 and wanted to see if anyone else has ran into the same issue. To test out the product, I have created a program that will generate a random number, I have also made a bitstream to do some operations on…
Taylor Clark
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