A simplified evaluation of protection distance in areal spectrum sharing

This paper focuses on a spectrum sharing cellular system primarily used by noncellular, stand-alone wireless systems. Geographically deployed base stations (BSs) that cover the service area to continuously provide spectrum sharing act as a secondary system, where the sharing condition is provided to the total interference power at the primary system. In this case, how much transmission power from each BS is allowed on the shared spectrum? By applying the propagation model originally used to evaluate cellular systems, this paper numerically and theoretically reveals the relation between the protection distance (PD) and allowable transmission power.