There are a couple projects of differing scope: - srsLTE (https://www.srslte.com/ https://www.srslte.com/) - OpenAirInterface (https://www.openairinterface.or

There are a couple projects of differing scope: - srsLTE (https://www.srslte.com/ https://www.srslte.com/) - OpenAirInterface (https://www.openairinterface.org/ https://www.openairinterface.org/) I've successfully used srsENB as a base station, largely to generate "model" LTE waveforms so that I could then decode them and verify my understanding. srsLTE is quite well written code-wise and is actively improving/growing. Seems to have a supportive single company and community behind it. OpenAirInterface is more geared towards 5G research and is a lot more ad-hoc in terms of documentation and capabilities.