Attachment Schedule S document

This document pretains to SAT-MOD-20060821-00091 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2006082100091_521958

NOISE BUDGET REFERENCE CALCULATION

                                    Uplink   Downlink
Beam                                  SSA        SSA


            Carrier parameters

                                     D1        D2         D3      D4       D5       D6       D7
Data Rate (Mbps)                    0.064       0.384    1.544    2.048    9.216       45    69.64
FEC                                 0.682       0.682    0.875    0.682     0.75     0.75    0.795
Modulation                          QPSK       QPSK      QPSK     QPSK     QPSK     QPSK     QPSK
C/(N+I) - Total Required (dB)          7.4         7.4    10.8       7.4     9.9      5.6      8.7


             Uplink parameters

                                     D1        D2          D3     D4       D5       D6       D7
Uplink Frequency (MHz)              14250      14250     14250    14250    14250    14250    14250
Tx antenna Input power (dBW)         0.48        8.29     13.25    15.55    21.67    28.56    30.22
Input power density (dBW/Hz)          -47         -47       -47      -47      -47      -47      -47
Tx Antenna Diameter (Metres)         4.50        1.80      1.20     2.40     2.40     4.50     7.00
Tx Antenna Efficiency                0.65        0.65      0.65     0.65     0.65     0.65     0.65
Tx Antenna Gain (dB)                 54.7        46.7      43.2     49.2     49.2     54.7     58.5
Mispointing loss (dB)                 0.5         0.5       0.5      0.5      0.5      0.5      0.5
Atmospheric loss (dB)                 0.3         0.3       0.3      0.3      0.3      0.3      0.3
Uplink Path loss (dB)               207.9       207.9    207.9     207.9    207.9    207.9    207.9
Uplink Rain Attenuation (dB)          0.0         0.0       0.0      0.0      0.0      0.0      0.0
Max. Satellite antenna G/T (dB/K)     6.0         6.0       6.0      6.0      6.0      6.0      6.0
Edge of coverage SSA (dB)             6.0         6.0       6.0      6.0      6.0      6.0      6.0


(C/I)Up-Intrasystem (dB)               30.0     30.0    30.0     30.0     30.0     30.0     30.0
(C/I)Up-ASI (dB)                       32.2     24.2    20.7     26.7     26.7     32.2     36.0
(C/N)Uplink Thermal (dB)               27.5     19.6    16.1     22.1     22.1     27.5     31.4
C/(Nthermal+NASI+Nintrasystem) (dB)    24.7     18.0    14.7     20.3     20.3     24.7     27.0


              Downlink parameters

                                       D1     D2         D3     D4       D5       D6       D7
Downlink Frequency (MHz)              11500   11500    11500    11500    11500    11500    11500
Beam peak EIRP density (dBW/Hz)         -23      -23      -23      -23      -23      -23      -23
Downlink EIRP/Carrier (dBW)           24.48    32.29    37.25    39.55    45.67    52.56    54.22
Edge of coverage SSA (dB)               6.0      6.0      6.0      6.0      6.0      6.0      6.0
Downlink EIRP/Carrier at EOC (dBW)    18.48    26.29    31.25    33.55    39.67    46.56    48.22
Rx E/S Antenna Diameter (Metres)       0.90     1.80     2.40     1.20     2.40     0.90     1.80
Rx Antenna Efficiency                  0.65     0.65     0.65     0.65     0.65     0.65     0.65
Rx Antenna Gain (dB)                   38.8     44.8     47.3     41.3     47.3     38.8     44.8
Rx System Noise temp (K)              110.0    110.0   110.0     110.0    110.0    110.0    110.0
Rx E/S G/T (dB/K)                      18.4     24.4     26.9     20.9     26.9     18.4     24.4
Antenna mispointing error (dB)          0.5      0.5      0.5      0.5      0.5      0.5      0.5
Atmospheric loss (dB)                   0.3      0.3      0.3      0.3      0.3      0.3      0.3
Downlink Path loss (dB)               206.1    206.1   206.1     206.1    206.1    206.1    206.1
Downlink Rain Attenuation (dB)          0.0      0.0      0.0      0.0      0.0      0.0      0.0
(C/I)Dn Intra-system (dB)              30.0     30.0    30.0     30.0     30.0     30.0     30.0
(C/I)Down-ASI (dB)                     16.9     22.9    25.4     19.4     25.4     16.9     22.9
(C/N)Downlink Thermal (dB)             11.1     17.2    19.7     13.6     19.7     11.2     17.2
C/(Nthermal+NASI+Nintrasystem) (dB)    10.1     16.0    18.3     12.5     18.3     10.1     16.0


                End-to-End

                               D1     D2       D3     D4       D5      D6      D7
(C/N+I) - Total Actual (dB)     9.9     13.9   13.1    11.9     16.2     9.9    15.7
(C/N+I) - Total Required(dB)    7.4      7.4   10.8      7.4     9.9     5.6     8.7
Margin (dB)                     2.5      6.5    2.3      4.5     6.3     4.3     7.0



Document Created: 2006-08-23 13:28:57
Document Modified: 2006-08-23 13:28:57

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