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GNU Radio is a free & open-source software development toolkit that provides signal processing blocks to implement software radios. It can be used with readily-available low-cost external RF hardware to create software-defined radios, or without hardware in a simulation-like environment. It is widely used in hobbyist, academic and commercial environments to support both wireless communications research and real-world radio systems.

 

GNU Radio hardware

gnuradio_board

Universal Sofware Radio Peripheral (USRP)

  • 2 x AD9862 codec: each 2 A/D 12 bit, 64 Megasamples/sec; 2 D/A, 14 bit, 128 Ms/sec
  • FPGA: Altera Cyclone EP1C12, 64 MHz, 12,060 LEs, 239,616 RAM bits
  • USB 2.0, Cypress FX2
  • 4 x daughterboards for signal conditioning

Available from Ettus Research LLC, but design is open source.

Newer USRP2 has 100 MHz converters, much larger Xilinx FPGA

 

 


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