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The Uplink Interference Analysis between Closely Separated GSO FSS VSAT Networks in the 27.5-30 GHz Frequency Band

This paper focuses on quantifying the coexistence along with evaluating the uplink interference of closely separated GSO FSS VSAT networks in 27.5-30 GHz frequency band. The analysis results show that the maximum off-axis e.i.r.p. density limits in Recommendation ITU-R S.524-9 have not provided sufficient guidance for protection of the later GSO FSS VSAT networks from unacceptable interference. Several comparative examples with and without mitigation techniques are given in this paper. From the analysis, it can be seen that the mitigation techniques can be considered which may assist administrations in planning, managing and coordinating GSO FSS VSAT networks in those cases where close orbital spacing is required.