Specifications
C.2.2
Modulation and Encoding Types
Note: OQPSK is a user-option and can be used in place of QPSK.
Table C-3 shows combinations of modulation and forward error correction (FEC)
encoding types.
Viterbi, K7
Viterbi, K7
Reed-Solomon
Viterbi, K7
Viterbi, K7, TCM
Viterbi, K7
Reed-Solomon
Viterbi, K7, TCM
Reed-Solomon
EFD
Compatible
Viterbi, K7, TCM
Reed-Solomon
IESS-310
Compatible
Sequential
Sequential
Reed-Solomon
Sequential
Sequential
Reed-Solomon
Space Link Remote
(Independent)
Uncoded
C–6
Table C-3. Modulation and Encoding Types
Encoder
1/2
1/2
225/205 Closed
1/2, 3/4, 7/8
2/3
1/2, 3/4, 7/8
225/205 Closed or IDR T1,
126/112 IBS and D&I,
219/201 IDR E1
2/3
225/205 Closed or IDR T1,
126/112 IBS and D&I,
219/201 IDR E1
2/3
219/201 [4] No Overhead,
219/201 [4] IBS and D&I,
219/201 [8] IDR T1/E1
1/2
1/2
225/205 Closed
1/2, 3/4, 7/8
1/2, 3/4, 7/8
225/205 Closed
1/2, 3/4, 7/8
1/1
Code Rate
Modulation
QPSK, OQPSK
QPSK, OQPSK
QPSK, OQPSK
QPSK, OQPSK
QPSK, OQPSK
BPSK, QPSK,
BPSK, QPSK,
SDM-300A Satellite Modem
BPSK
BPSK
8PSK
8PSK
8PSK
BPSK
BPSK
OQPSK
OQPSK
Rev. 4
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