Attachment Schedule S document

This document pretains to SAT-MOD-20050110-00004 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2005011000004_413062

      Table A.13-3 – Link Budget for High-Power Notification Forward Link to
                                Handheld User Terminal (SCPC)

Representative Forward Link Budget
UT Type                                                           Handheld Terminal
Carrier Type                                                    High Power Notification
General Parameters                                 Unit
E/S elevation angle                                deg                   28.0
Minimum user elevation angle                       deg                   20.0
Uplink range                                       km                   38792
Downlink range                                     km                   39554
Uplink frequency                                   GHz                  29.625
Downlink frequency                                 GHz                  2.200
Bandwidth/carrier                                  kHz                   8.0
Uplink
Uplink E/S antenna diameter                          m                   11.0
Uplink E/S antenna peak gain                        dBi                  68.1
E/S antenna pointing error                          dB                    0.5
Clear-sky uplink EIRP                              dBW                   57.2
Rain faded uplink EIRP                             dBW                   74.0
Free space loss                                     dB                  213.7
Rain attenuation                                    dB                   16.8
Satellite antenna pointing error                    dB                    0.3
Satellite antenna receive system noise temp.       dB-K                  30.9
Effective satellite antenna G/T                    dB/K                  24.8
Uplink C/N o                                       dBHz                  96.4
Uplink C/IM o                                      dBHz                 104.5
Uplink C/I oASI                                    dBHz                  95.3
Uplink C/I o Intra-system                          dBHz                 199.0
Aggregate uplink C/Io                              dBHz                  95.3
Downlink
Satellite EIRP/carrier                             dBW                   60.4
Free space loss                                     dB                  191.2
Atmospheric loss                                    dB                   0.1
User terminal antenna gain                          dB                    0.0
User terminal system noise temperature             dB-K                  27.0
User terminal G/T                                  dB/K                 -27.0
Downlink propagation margin                         dB                   27.8
Downlink C/N o                                     dBHz                  42.9
Downlink C/IM o                                    dBHz                  64.5
Downlink C/I o Intra-system                        dBHz                 199.0
Downlink C/I o ext                                 dBHz                  52.9
Aggregate downlink C/Io                            dBHz                  52.9
End-to-End Performance
End-to-end C/N o                                   dBHz                  42.9
End-to-end aggregate C/Io                          dBHz                  52.9
End-to-end C/IM o                                  dBHz                  64.5
Total aggregate C/(N o +I o +IM o )                dBHz                  42.5
Total aggregate C/(N+I+IM)                          dB                   3.4
Required C/N                                        dB                   3.4
System Margin                                       dB                   0.0



Document Created: 2005-01-12 14:54:41
Document Modified: 2005-01-12 14:54:41

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