Advanced Spectrum Sharing Techniques for Coexistence of OFDM Radar and 5G BMSB System

The coexistence of radar systems and 5G Broadcast/Multicast Service Broadcast (BMSB) networks presents unique challenges in resource allocation. Our study addresses these challenges by developing an innovative approach for simultaneous sub-carrier assignment and power distribution in a scenario where a base station delivers broadcast content to multiple users near a radar installation. Using orthogonal frequency division multiple access (OFDM), we introduce a penalty term to relax binary constraints and consolidate power-related variables, transforming the complex non-linear problem into manageable convex sub-challenges through quadratic transformation. Our results demonstrate the balance between optimizing 5G BMSB performance and preserving radar functionality, revealing that increasing BMSB power beyond a certain point doesn’t improve performance when radar interference is present. This insight contributes to designing energy-efficient 5G BMSB systems that coexist with critical infrastructure.