Attachment Schedule S document

This document pretains to SAT-AMD-20060505-00054 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2006050500054_498842

              Table 10 – Link Budget for Voice-Rate Return Link from
                  Personal Accessory User Terminal using CDMA

Representative Return Link Budget
UT Type                                                    Personal Accessory
Carrier Type                                                    CDMA
General Parameters                             Unit
E/S elevation angle                            deg                28.0
Minimum user elevation angle                   deg                20.0
Uplink range                                   km                39554
Downlink range                                 km                38792
Uplink frequency                               GHz               2.020
Downlink frequency                             GHz              19.700
Bandwidth/carrier                              kHz              1,250.0
Uplink
Uplink EIRP                                    dBW                5.0
Free space loss                                 dB               190.5
Atmospheric loss                                dB                0.1
Uplink propagation margin                       dB               13.5
Effective satellite antenna gain                dBi              43.0
Satellite receive system noise temperature     dB-K              26.0
Effective satellite antenna G/T                dB/K              17.0
Uplink C/No                                    dBHz              46.5
Uplink C/Io Intra-system                       dBHz              44.3
Uplink C/Io ext                                dBHz              56.5
Aggregate uplink C/Io                          dBHz              44.1
Downlink
Satellite EIRP                                 dBW               11.9
Free space loss                                 dB               210.1
Atmospheric attenuation                         dB                0.5
Rain attenuation                                dB                8.1
E/S antenna gain                                dB               64.5
E/S antenna pointing error                      dB                0.3
Nominal system noise temperature               dB-K              23.9
Nominal E/S G/T                                dB/K              40.3
System noise temperature degradation in rain    dB                2.6
Rain-degraded system noise temperature         dB-K              26.5
Rain-degraded E/S G/T                          dB/K              37.7
Downlink C/No                                  dBHz              59.5
Downlink C/IMo                                 dBHz              67.9
Downlink C/Io Intra-system                     dBHz              69.3
Downlink C/Io ASI                              dBHz              66.9
Aggregate downlink C/Io                        dBHz              64.9
End-to-End Performance
End-to-end C/No                                dBHz               46.3
End-to-end aggregate C/Io                      dBHz               44.1
End-to-end C/IMo                               dBHz               67.9
Total aggregate C/(No+Io+IMo)                  dBHz               42.0
Total aggregate C/(N+I+IM)                      dB               -18.9
Required C/N                                    dB               -18.9
System Margin                                   dB                 0.0



Document Created: 2006-05-09 10:48:16
Document Modified: 2006-05-09 10:48:16

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