Attachment Schedule S document

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

IBFS_SATMOD2006082100091_521923

NOISE BUDGET REFERENCE CALCULATION

                                    Uplink   Downlink
Beam                                 AOR         USA




            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)              14125      14125     14125    14125    14125    14125    14125
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)                 54.6        46.6      43.1     49.1     49.1     54.6     58.4
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)               207.8       207.8    207.8     207.8    207.8    207.8    207.8
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)     3.0         3.0       3.0      3.0      3.0      3.0      3.0


Edge of coverage AOR (dB)                4.0      4.0      4.0      4.0      4.0      4.0      4.0
(C/I)Up-Intrasystem (dB)               30.0      30.0    30.0     30.0     30.0     30.0     30.0
(C/I)Up-ASI (dBW)                      32.2      24.2    20.7     26.7     26.7     32.2     36.0
                                                            -
Boltzmanns constant                   -228.6   -228.6   228.6    -228.6   -228.6   -228.6   -228.6
(C/N)Uplink Thermal (dB)               26.5      18.6    15.1     21.1     21.1     26.5     30.4
C/(Nthermal+NASI+Nintrasystem) (dB)    24.2      17.3    13.9     19.6     19.6     24.2     26.6


              Downlink parameters

                                       D1      D2         D3     D4       D5       D6       D7
Downlink Frequency (MHz)              12000    12000    12000    12000    12000    12000    12000
Beam peak EIRP density (dBW/Hz)         -26       -26      -26      -26      -26      -26      -26
Downlink EIRP/Carrier (dBW)           21.48     29.29    34.25    36.55    42.67    49.56    51.22
Edge of coverage USA (dB)               3.0       6.0      6.0      6.0      6.0      3.0      6.0
Downlink EIRP/Carrier at EOC (dBW)    18.48     23.29    28.25    30.55    36.67    46.56    45.22
Rx E/S Antenna Diameter (Metres)       0.90      1.80     4.50     1.80     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)                   39.2      45.2     53.2     45.2     47.7     39.2     45.2
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)                      18.8      24.8     32.8     24.8     27.3     18.8     24.8
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)               206.4     206.4   206.4     206.4    206.4    206.4    206.4
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    30.9     22.9     25.4     16.9     22.9
                                                            -
Boltzmanns constant                   -228.6   -228.6   228.6    -228.6   -228.6   -228.6   -228.6


(C/N)Downlink Thermal            11.1     14.2   22.1    14.2     16.7    11.2    14.2
C/(Nthermal+NASI+Nintrasystem)   10.1     13.5   21.0    13.5     15.9    10.1    13.5


                    End-to-End

                                 D1     D2       D3     D4       D5      D6      D7
(C/N+I) - Total Actual (dB)       9.9     12.0   13.1    12.6     14.4     9.9    13.3
(C/N+I) - Total Required(dB)      7.4      7.4   10.8      7.4     9.9     5.6     8.7
Margin (dB)                       2.5      4.6    2.3      5.2     4.5     4.3     4.6



Document Created: 2006-08-23 13:17:24
Document Modified: 2006-08-23 13:17:24

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