Coexistence Analysis Between 5G NR and TVRO in C-Band

Abstract

This work reports a coexistence analysis between 5G New Radio (5G NR) and Satellite Television Receive Only (TVRO) in C-Band. The coexistence experiments to detect 5G NR interference in TVRO systems are based on the two following approaches: broadcast of analog and digital TV channels, received by a 1.7 meters parabolic antenna pointed to the Star One C2 geostationary satellite from Embratel; 100 MHz-bandwidth 5G NR link at 3.55 GHz with two printed log periodic antennas. The performance analysis has been carried out as a function of the TV channel quality signal, by means of varying the 5G power level at vertical polarization. Measured spectra of either radiofrequency (RF) and intermediate frequency (IF) signals are presented for demonstrating a probable interference problem due to the installation of 5G base stations close to TVRO user homes. For instance, there are still 22 million TVRO users in Brazil and 120 million homes attended by C-Band satellites in United States for radio and TV services. Finally, two efficient technological solutions are proposed and theoretically validated, using SF.1486 ITU-R recommendation, for mitigating 5G NR interference to TVRO and their results are properly compared to other techniques reported in literature. Index Terms-5G, C-Band, coexistence, satellite and TVRO.