CONTENTS

RECOMMENDATION  ITU-R  BO.1834*     2
Coordination between geostationary-satellite orbit fixed-satellite service networks and broadcasting-satellite service networks in the band 17.3-17.8 GHz and among the broadcasting-satellite service and associated feeder-link networks serving Region 2 in the bands 17.3-17.8 GHz        and 24.75-25.25 GHz     2
Scope     2
Annex 1  Coordination among GSO BSS and associated feeder-link networks  serving Region 2 in        the 17.3-17.8 GHz and 24.75‑25.25 GHz  unplanned frequency bands     3
        1.1 Introduction  3
        1.2 Assumptions and results  4
                  1.2.1 Assumptions  4
                  1.2.2 Results of analysis for traditional BSS configurations  4
                  1.2.3 Results of analysis for multimedia broadcast configuration (forward-link only)     5
        1.3 Conclusion  5
Annex 2  Coordination between GSO FSS (space-to-Earth) networks and Region 2 GSO BSS networks in the band 17.3-17.8 GHz     6
        2.1 Introduction  6
        2.2 Methodology  6
                  2.2.1 Derivation of maximum e.i.r.p. radiated without triggering a coordination  6
        2.3 Technical parameters of BSS and FSS systems  7
                  2.3.1 BSS systems  7
                  2.3.2 FSS systems  8
        2.4 Results  9
        2.5 Conclusion  12
Appendix 1 to Annex 2   Examples of system parameters of unplanned BSS systems and associated feeder links in frequency bands 17.3-17.8 GHz and 24.75-25.25 GHz     12
Appendix 2 to Annex 2  Reference receiving antenna co-polar pattern     15