With Communications Toolbox™ Support Package for USRP® Radio, MATLAB® and Simulink® connect to USRP® software-defined radios (SDR) from Ettus Research® to provide a radio-in-the-loop design and modeling environment. With this support package, Communications Toolbox, and a USRP®, you can design and verify practical SDR systems starting with Release 2011a of MATLAB and Simulink. This support package does not require GNU Radio open-source software.
Communications Toolbox Support Package for USRP® Radio includes:
Use of USRP® as a standalone peripheral for live RF data I/O, including:
Functions and System objects for connecting MATLAB to UHD™-based USRP® radios
Blocks for connecting Simulink to UHD™-based USRP® radios
Examples to assist you:
QPSK transmitter and receiver
FM mono and stereo receivers
FRS/GMRS transmitter and receiver
 USRP, USRP2, UHD, and Ettus Research are trademarks of National Instruments Corp.