CONTENTS

Policy on Intellectual Property Right (IPR)
Annex 1  Basic considerations in the development of sharing criteria
 1     Overall performance objective
        1.1     Error performance and availability objectives
                  1.1.1     ITU-T and ITU-R Reference Recommendation
                  1.1.2     Time basis for evaluation
 2     Sub-division of the performance and availability objectives
        2.1     Apportionment of section error performance and availability objective
        2.2     Apportionment of performance and availability degradation to different services
 3     Characteristics of interference
 4     Considerations on allowable performance/availability degradations due to interference and related interference criteria
        4.1     Long-term interference
                  4.1.1     Effect of fade margin reduction in bands where multipath is a dominant factor
                  4.1.2     Effect of fade margin reduction in bands where rainfall is a dominant factor
                  4.1.3     Contribution of combined receiver thermal and interference noise
                  4.1.4     EP/AP degradation in multi-hop links
        4.2     Short-term interference
 5     Use of automatic transmit power control (ATPC) in digital systems
 6     Calculation of actual interference levels
Annex 2  Digital FS system parameters for sharing/compatibility studies
 1     Introduction
 2     Transmitter characterization
        2.1     Equipment parameters
        2.2     Statistic distribution over the territory
 3     Receiver characterization
        3.1     Equipment parameters
        3.2     Permitted interference
 4     Tables of system parameters
        4.1     Frequency range and its related reference ITU-R Recommendation
        4.2     Modulation format
        4.3     Channel spacing and receiver noise bandwidth
        4.4     Tx output power range (dBW)
        4.5     Tx output power density range (dBW/MHz)
        4.6     Feeder/multiplexer loss range (dB)
        4.7     Antenna gain range (dBi) (point-to-point) or antenna type and gain range (dBi) (point-to-multipoint)
        4.8     e.i.r.p. range (dBW)
        4.9     e.i.r.p. density range (dBW/MHz)
       4.10     Receiver noise figure typical (dB)
       4.11     Receiver noise power density typical (dBW/MHz)
       4.12     Normalized Rx input level for 1 × 10⁻⁶ BER (dBW/MHz)
       4.13     Nominal long-term interference power density (dBW/MHz)
       4.14     Additional information (nominal Rx input level)
Appendix 1 to Annex 2  Examples for statistical distribution studies
Annex 3  Other FS specific system parameters