Mocomtech SLM-5650 - Manual (Page 31)

SLM-5650 Satellite Modem Revision 2
Introduction MN/SLM5650.IOM
1–11
Table 1-3. Doppler Requirements
Parameter C-Band X-Band Ku-Band Ka-Band
Doppler Shift in Hz ± 2475 ± 3535 ± 6045 ± 11,810
Doppler Rate of Change in Hz/sec ± 226 ± 270 ± 490 ± 1046
Doppler Acceleration in Hz/sec
2
± 243 ± 290 ± 526 ± 1124
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
b
/N
0
performance with
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
b
/N
0
performance with differential encoding and
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
-03
to 1 x 10
-07
.
Operating with 8-PSK modulation and rate 2/3 pragmatic trellis coding (without Reed-
Solomon outer coding), SLM-5650 BER vs. E
b
/N
0
performance is less than or equal to
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
b
/N
0
performance is better than or equal to
the values shown in Table 1-7 when tested in an IF back-to-back configuration.