GNU Radio is an open source collection of code and tools to build various radio elements for a "Software Defined Radio" or a radio implemented with the help of an FPGA that is programmed to work as a radio. The basic tutorial about GNU Radio can be found at the organisation's website GNU Radio Tutorial. An introduction to how GNU Radio can be used for satellite communication from Dr. Daniel Estevez is Here.
We built groundstation-based GNU Radio receivers and transmitters for some LEO CubeSats for prior missions and are planning to implement a Deep Space Network (DSN) compatible transponder for a proposed mission, and would like to know if anyone has forged this path before us.
I am aware of several software defined radios for deep space like the JPL/Utah State IRIS radio that uses a custom solution, as well as efforts to build CCSDS compatible groundstations that would be able to talk to interplanetary spacecraft, but I've yet to see any evidence of anyone implementing a GNU Radio solution for the spacecraft. Have we missed some critical capability that makes this approach impractical?
TLDR: Any resources for implementing Deep Space Network (DSN) communications with GNU Radio?