Satellite & NTN Resources

Worked studies, documentation, and comparisons for satellite and 5G non-terrestrial network simulation: link budgets, the 3GPP TR 38.821 reference scenario, in-flight connectivity, and RF coverage planning.

NetSim NTN library NetSim Astra

Worked studies

Complete scenarios with parameters, results, and discussion.

System-level study 3GPP TR 38.821 reference scenario → The six reference scenarios explained, and the Set-1 LEO-600 S-band scenario simulated: SINR, throughput, and capacity metrics. Application study In-flight connectivity over LEO → A Bangalore to Delhi flight over 50 and 100 LEO satellites: satellite handover, throughput, SINR, and availability. Worked example (PDF) NTN link budget calculation → A worked satellite link-budget calculation, step by step.

Comparisons and Q&A

How the tools compare, and detailed answers on scope and modelling.

Q&A NetSim NTN Q&A → 21 questions on orbits, beams, link budgets, scheduling under satellite delay, and what is not modelled. Q&A NetSim Astra Q&A → 24 questions on the coverage-planning workflow, sourced against STK and MATLAB documentation.

Library documentation

The full model references for the satellite libraries.

PDF 5G NTN library → The full 5G NTN model reference: channel, link budget, beams, and protocols. PDF Satellite communication library → The classic GEO satellite network library reference. Evaluation Run these studies yourself → Request an evaluation and we will share the workspaces.