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The coexistence and intersystem interference coordination between systems is difficult to be achieved and relies on many technical factors. In this paper, intersystem interference scenarios such as co-channel, zero-guard band, and adjacent channel will be analyzed to determine the coexistence coordination requirements between IMT-advanced and fixed services. These coordination requirements in terms of frequency separation and separation distance will be considered in dense urban, urban, suburban, and rural areas using spectral emission mask as an effective intersystem interference analysis model. Antenna height and different channel bandwidths effect as main effectual factors for systems coexistence will be taken into account.