[USRP-users] CogWave open-source software

Vincent Le Nir vincent.lenir at rma.ac.be
Mon Feb 11 10:34:43 EST 2013

Dear all,

I am pleased to announce that we have just released CogWave, an 
open-source software platform aiming at developing cognitive radio 

The CogWave software allows the exchange of video, audio and text 
between two USRPs through a graphical user interface (GUI) developed in 
Qt4/Gstreamer and cognitive radio waveforms developed in IT++. The USRP 
hardware driver (UHD) C++ application programming interface (API) allows 
to receive and transmit IQ samples. Combining CogWave with USRP gives a 
rapid prototyping platform for physical layer design and algorithm 
validation through a real-time video, audio and text transmission. For 
more information, please have a look at our website 

So far, we have implemented a cognitive BlindOFDM waveform. This 
waveform is an orthogonal frequency division multiplexing (OFDM)-based 
waveform divided into multiple sub-channels with a spectrum sensing 
block based on energy detection to determine the best sub-channel for 
transmission. Multiple users are handled by orthogonal frequency 
division multiple access (OFDMA) and full-duplex is enabled by time 
division duplexing (TDD). A complete OFDM blind receiver which does not 
require the use of pilot symbols is used for time, frequency, phase 
offset and channel estimation. Cyclic redundancy check (CRC) and forward 
error correction (FEC) are used to detect and correct errors within a 
frame's preamble and postamble.

The CogWave project was initiated at the department Communication, 
Information, Systems & Sensors (CISS) at the Royal Military Academy 
(RMA), Belgium and is hosted on GitHub:

Best regards
Vincent Le Nir

Dr. Ir. Vincent Le Nir
Royal Military Academy
Dept. Communication, Information Systems & Sensors (CISS)
30, Avenue de la Renaissance
B-1000 Brussels
Tel : +32-2742 6624
Fax : +32-2742 6672
email : vincent.lenir at rma.ac.be

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