TY JOUR TI Digital Network Modelling for Railway Transport Sector at the Intersection with Other Digital Networks KW LTE-1800 TDD KW digital radio communication systems KW radio network design KW frequency resource KW software modelling KW railway transport KW radio communication JO Proceedings of Petersburg Transport University AU Lobeev, D.P. PY 2025 IS 22 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"