SparSDR

This code accompanies the paper SparSDR: Sparsity-proportional Backhaul and Compute for SDRs.

What's included

• FPGA images that enable the USRP N210 or Analog Devices ADALM-PLUTO to capture a wide range of frequencies and send compressed signals
• The sparsdr_reconstruct program, which reconstructs signals from compressed data
• The gr-sparsdr module for GNU Radio, which makes SparSDR easy to use

Getting started

• Pluto getting started guide
• USRP N2101 getting started guide

Debugging

When SparSDR does not work correctly, the debugging guide may help.

Compatibility

We have tested SparSDR with GNU Radio 3.8.2.0.

SparSDR should work with any GNU Radio version in the 3.8 series.

Pluto SDR

SparSDR works with the Analog Devices ADALM-PLUTO radio. We have tested hardware revisions B and C.

USRP N210

We have tested SparSDR with a USRP N210 revision 4 with an SBX-120 or a CBX-120 daughter board.

This repository includes one FPGA image for the USRP N210 revision 4, and a separate FPGA image for N210 revisions 2 and 3.

Daughter boards other than the SBX-120 should also work, with the following considerations:

• If the daughter board receive bandwidth is less than 100 MHz, this will limit what you can receive with SparSDR
• If the daughter board receive bandwidth is greater than 100 MHz, you may see aliasing because the signal will still be sampled at 100 million samples per second.

Licenses

• gr-sparsdr: GNU GPL v3 or later
• fpga_images/Pluto: GNU GPL 2
• fpga_src/Pluto: GNU GPL v2 or Apache 2.0
• fpga_images/N210 and fpga_src/N210: GNU GPL v3 or later
• Everything else: Apache 2.0