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Recommendation ITU-R F.758 provides [22] provides fixed service characteristics for sharing with aircraft-mounted FSS Earth stations in the 27.5-29.5 GHz band.. As specified in the Recommendation (Annex 2, Section 4), the system parameters provided are not representative of any actual FS system, but represent an averaging or an expected range of values suitable for generic sharing/compatibility studies.

Stations FS5 and FS6 in the table 1 70 below have parameters in line with the Rec. ITU-R F.758-5.Also four other representative FS stations FS1, FS2, FS3 and FS4 can be proposed as given in in Table 1. FS1 and FS3 stations are representative of PP FS stations typically deployed, FS2 is representative of a longer than usual link operating in Scotland or Wales where the terrain is mountainous and hence an elevation angle of 5 degrees is appropriate, while FS4 is representative of a P-MP Hub station; P-MP subscriber stations are expected to have parameters similar to those valid for PP stations.

Antenna radiation patterns for FS-PP are usually assumed in sharing studies using the formulas in Recommendation ITU-R F.699 [23] (when a single FS system is considered as victim/interferer) or Recommendation ITU-R F.1245 [24] (when averaging among a number of FS systems as victim/interferer). For P-MP it is recommended to use Recommendation ITU-R F.1336 [25].

 

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Table 6970: Recommended FS characteristics for FS vs FSS studies

The Spectrum Mask for P-P and P-MP can be found in EN 302 217-2-2 Annex A (table A4) and ETSI EN 302 326-2 (Section 5.3.4.1) respectively. Blocking information is available from EN 301 390 (Section 7).

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