Spectrum sharing studies in C band between IMT2000 (WIMAX) & satellite networks

Satellite operators are using the C-Band globally to provide essential telecommunication services. In many countries it serves as the core network for national and international communication. The new terrestrial service (IMT 2000) defined by the International Telecommunication Union (ITU) uses the same spectrum (C-Band) which causes the interference in satellite downlink section. Interference is the main threat to satellite downlink performance such harmful signals originate from the terrestrial wireless application from many locations, in all directions. These signals are powerful enough to saturate the C-Band satellite receiving systems causing a potential for total loss of service in C-Band. This paper proposes a hypothesis about interference effect on satellite downlink receivers and then confirms the hypothesis with experimental results.