Attachment Schedule S document

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

IBFS_SATAMD2006050500054_498841

              Table 9 – Link Budget for Voice-Rate Return Link from
                 Personal Accessory User Terminal using FDMA

Representative Return Link Budget
UT Type                                                   Personal Accessory
Carrier Type                                                   FDMA
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               8.0
Uplink
Uplink EIRP                                    dBW               6.0
Free space loss                                 dB              190.5
Atmospheric loss                                dB               0.1
Uplink propagation margin                       dB              17.9
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             43.1
Uplink C/Io Intra-system                       dBHz             48.2
Uplink C/Io ext                                dBHz             53.1
Aggregate uplink C/Io                          dBHz             46.9
Downlink
Satellite EIRP                                 dBW               8.5
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             56.1
Downlink C/IMo                                 dBHz             68.1
Downlink C/Io Intra-system                     dBHz             60.5
Downlink C/Io ASI                              dBHz             63.5
Aggregate downlink C/Io                        dBHz             58.7
End-to-End Performance
End-to-end C/No                                dBHz             42.9
End-to-end aggregate C/Io                      dBHz             46.7
End-to-end C/IMo                               dBHz             68.1
Total aggregate C/(No+Io+IMo)                  dBHz             41.4
Total aggregate C/(N+I+IM)                      dB               2.3
Required C/N                                    dB               2.3
System Margin                                   dB               0.0



Document Created: 2006-05-09 10:47:55
Document Modified: 2006-05-09 10:47:55

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