Table C-5. Demodulation Fec Decoding - Comtech EF Data SDM-300A Installation And Operation Manual

SDM-300A Satellite Modem
Table C-4. Demodulator Digital Data Rated (Continued)
Modulation
Type
8PSK 2/3
8PSK 2/3
QPSK 1/2
QPSK 1/2
8PSK 2/3
8PSK 2/3
QPSK 3/4
QPSK 3/4
QPSK 3/4
QPSK 3/4
8PSK 2/3
8PSK 2/3
8PSK 2/3
8PSK 2/3
BPSK 1/1
QPSK 1/1
OQPSK 1/1
C.3.2 Demodulation and FEC Decoding Types
Table C-5 shows combinations of demodulation and forward error correction decoding.
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
Uncoded
Rev. 4
Decoding Type
IBS
IBS and Reed-Solomon
D&I
D&I and Reed-Solomon
ASYNC
ASYNC and Reed-Solomon
IDR, T1
IDR, T1 and Reed-Solomon
IDR, E1
IDR, E1, and Reed-Solomon
IDR, T1
IDR, T1, and Reed-Solomon
IDR, E1
IDR, E1, and Reed-Solomon
None
None
None

Table C-5. Demodulation FEC Decoding

Decoder
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
1/1
Data Rate Range
512 kbit/s
512 kbit/s
64 kbit/s
64 kbit/s
512 kbit/s
512 kbit/s
1544 kbit/s
1544 kbit/s
2048 kbit/s
2048 kbit/s
1544 kbits
1544 kbits
2048 kbits
2048 kbits
4.8 Kbit/s
9.6 kbit/s
9.6 kbit/s
Code Rate Modulation
BPSK
BPSK
QPSK, OQPSK
8PSK
QPSK, OQPSK
8PSK
8PSK
BPSK
BPSK
QPSK, OQPSK
QPSK, OQPSK
QPSK, OQPSK
BPSK
QPSK, OQPSK
Specifications
2048 kbit/s
2048 kbit/s
1920 kbit/s
1920 kbit/s
2048 kbit/s
2048 kbit/s
Fixed Rate
Fixed Rate
2.5 Mbit/s
5.0 Mbit/s
5.0 Mbit/s
C–13