Brokering Spectrum Sharing Using Dynamic Spatial-Spectral Masks

Continued spectral crowding can potentially affect the operation of critical passive devices, such as radiometers and radio telescopes. Proliferation of fifth generation (5G) wireless communication systems in the 24–30 GHz band could cause massive interference with satellite-based radiometers that operate in the 23.6–24.0 GHz (from out-of-band spurious emissions) and the 50–58 GHz bands (from spurious harmonic operation of 5G systems). A brokering system is presented to protect crucial passive devices from unwanted interference by coordinating with active systems and limiting both in-band and out-of-band electromagnetic emissions from the active systems. Based on interference criteria presented by the passive systems to the broker, a spatial-spectral mask is created to limit the transmission of the active device in both the spatial and frequency domains.