SLM-5650 Satellite Modem
Introduction
Parameter
Doppler Shift in Hz
Doppler Rate of Change in Hz/sec
Doppler Acceleration in Hz/sec
1.8.3 Data Quality Performance
1.8.3.1
OM-73 Compatible Mode Performance
Operating in the OM-73-compatible mode, SLM-5650 BER vs. E
differential encoding and data scrambling enabled does not exceed values shown in Table
1-4 though Table 1-9.
1.8.3.2
MIL-STD-188-165A Compatible Mode Performance
Operating with BPSK, QPSK, or OQPSK modulation in the MIL-STD-188-165A
compatible mode, SLM-5650 BER vs. E
data scrambling enabled will not exceed values shown in Table 1-4 (without Reed-
Solomon) or Table 1-5 (with Reed-Solomon) tested in an IF back-to-back configuration
over the BER range 5 x 10
Operating with 8-PSK modulation and rate 2/3 pragmatic trellis coding (without Reed-
Solomon outer coding), SLM-5650 BER vs. E
the values shown in Table 1-6 when tested in an IF back-to-back configuration.
Operating with 8-PSK modulation, rate 2/3 pragmatic trellis coding, and Reed-Solomon
(219,201) outer coding, SLM-5650 BER vs. E
the values shown in Table 1-7 when tested in an IF back-to-back configuration.
Table 1-3. Doppler Requirements
C-Band
X-Band
± 2475
± 3535
± 226
± 270
2
± 243
± 290
/N
b
-03
-07
to 1 x 10
.
1–11
Ku-Band
± 6045
± 490
± 526
b
performance with differential encoding and
0
/N
performance is less than or equal to
b
0
/N
performance is better than or equal to
b
0
Revision 2
MN/SLM5650.IOM
Ka-Band
± 11,810
± 1046
± 1124
/N
performance with
0
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