Attachment Schedule S document

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

IBFS_SATMOD2005011000004_413069

            Table A.13-10 – Link Budget for Voice-Rate Return Link from
                     Personal Accessory User Terminal using CDMA

Representative Return Link Budget
UT Type                                                       Personal Accessory
Carrier Type                                                       CDM A
General Parameters                                Unit
E/S elevation angle                               deg                28.0
M inimum 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/N o                                     dBHz               46.5
Uplink C/I o Intra-system                        dBHz               44.3
Uplink C/I o ext                                 dBHz               56.5
Aggregate uplink C/I o                           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/IM o                                  dBHz               67.9
Downlink C/I o Intra-system                      dBHz               69.3
Downlink C/I o ASI                               dBHz               67.1
Aggregate downlink C/I o                         dBHz               65.1
End-to-End Performance
End-to-end C/N o                                 dBHz                46.3
End-to-end aggregate C/I o                       dBHz                44.1
End-to-end C/IM o                                dBHz                67.9
Total aggregate C/(N o +I o +IM o )              dBHz                42.0
Total aggregate C/(N+I+IM )                       dB                -18.9
Required C/N                                      dB                -18.9
System M argin                                    dB                 0.0



Document Created: 2005-01-12 14:57:29
Document Modified: 2005-01-12 14:57:29

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