Attachment Schedule S document

This document pretains to SAT-AMD-20060727-00083 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2006072700083_516101

             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             66.1
Aggregate downlink C/Io                        dBHz             64.4
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: 2006-07-31 14:41:43
Document Modified: 2006-07-31 14:41:43

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