Unlicensed networks; coexistence networks; 5G New Radio (NR); Massive MIMO Channel; Millimeter Wave;LAA; LTE; 5G NR-U

Unlicensed coexistence networks and spectrum sharing are two relatively new technological paradigms in cellular technology. These wireless systems are standardized and adopted to help cellular operators meet the ever-increasing mobile data demand by efficient utilization of unlicensed bands. However, several incumbents are already operational in these frequencies such as military, radar, and navy systems rendering the wireless environment extremely dynamic and unpredictable.