We are using ubuntu 22.04.3 LTS (Jammy Jellyfish) as operating system for the current setup.
Ubuntu 18.04.6 LTS (Bionic beaver) was also verified to be compatible with the hardware.
At least two USRP SDRs (Software-defined radio) are required: one for the gNB (Next Generation Node B) and one for the UE (User Equipment).