Spectrum occupancy in big cities - comparative study - Measurement campaigns in Barcelona and Poznan

摘要: In this paper a comparative study of two measurement campaigns carried out in Barcelona, Spain, and Pozna, Poland, to identify spectrum occupancy different bands, is presented. both cases the measurement setup was harmonized obtain comparable results. The problem of efficient noise floor estimation was also considered and a pragmatic approach that takes into account internal and ambient has been proposed. Obtained results show significant amount unused spectrum, with similar for both sites when analyzed globally (average occupancy of 27% Pozna? 22% Barcelona). On contrary, when going detailed analysis some specific bands, more relevant differences are obtained. These have been observed mainly Terrestrial TRunked RAdio (TETRA) bands Poland used by Code Division Multiple Access (CDMA) 450, as well bands theGlobal System for Mobile communications (GSM) due effects Universal Mobile Telecommunications System (UMTS) refarming the 900 MHz band.