Author(s)
Yankai Peng and J. Nicholas Laneman,
Abstract
The rapid growth of L-band Mobile-Satellite Service (MSS) direct-to-device (D2D) deployments raises spectrum coexistence concerns for Global Navigation Satellite Systems (GNSS) operating in the Radio Navigation Satellite Service (RNSS) band. However, empirical measurements and aggregate-interference modeling studies quantifying the impact of such interference on GNSS receivers remain limited. This work combines measured out-of-band emissions (OOBE) from an MSS D2D uplink transmitter with software-based GPS L1 simulations to evaluate both single- and multi-transmitter scenarios. Preliminary results suggest that a protection radius of 30 m is sufficient for single-source interference, whereas aggregate interference modeled with a Poisson point process requires an inner radius of 60 m to meet performance criteria.