Antenna Height and Angular Protection Methods to Mitigate Base Station Interference on Radar Altimeters

Abstract

This paper proposes two interference mitigation methods to evaluate the feasibility of coexistence between existing radar altimeter services and emerging 5G as well as potentially 6G cellular services in the C-band. Monte Carlo simulations are performed to evaluate the cumulative interference power from ground base stations on radar altimeters. Our results demonstrate that the antenna height protection scheme can help achieve coexistence only when the ground base station is equipped with the 4-by-4 and 8-by-8 antenna arrays in rural, suburban, and urban environments. Specifically, when using the angular protection method, ground base stations with 4-by-4, 8-by-8, or 16-by-8 antenna arrays can coexist with radar altimeters, except the ground base stations equipped with the 16-by-8 antenna array in the rural environment.