• Generated satellite and NB-IoT signal waveforms under different time-frequency resource configurations. Measured PAPR and EVM using Keysight instruments, and imported signals into signal generators for RF development board debugging.
• Analyzed satellite transponder entry/exit and available spectrum resources, as well as the aliasing of satellite spread spectrum and narrowband signals.
• Simulated IoT-NTN uplink and downlink under AWGN and NTN-TDL channels. Estimated demodulation thresholds for PUSCH, PDSCH, PDCCH, and PBCH channels using curve fitting, and conducted link budget and feasibility analysis.
• Simulated UE-side downlink PSS/SSS synchronization channel detection probability and synchronization time estimation. Analyzed the duration of MSG signaling occupancy in the random access process and system capacity.