Demodulation And Fec Decoding Types - Comtech EF Data SDM-300L3 Installation And Operation Manual

SDM-300L3 Satellite Modem
Specifications
14.7.2

Demodulation and FEC Decoding Types

The following combinations of demodulation and forward error correction decoding are
available.
Table 14-8. L-Band Demodulation and FEC Decoding Types
Decoder
Viterbi, K7
Viterbi, K7
Viterbi, K7
PTCM
Viterbi, K7
PTCM
(RS EFD Compatible)
PTCM
(RS IESS-310 Compatible)
Sequential
Sequential
Sequential
Sequential
Uncoded
Turbo Product
Turbo Product
Turbo Product
Note: Interleaver depths are selectable at: 4, 8, or 16. The values shown are default or Open Network
specified.
Code Rate
1/2
1/2 225/205 Closed
1/2 ,3/4, 7/8
2/3
1/2, 3/4, 7/8 225/205 [4] IDR T1
225/205 [8] No Overhead, ASYNC Overhead
219/201 [4] VSAT IBS, IBS, IDR E1
126/112 [4] IDR Small Carrier, SDM-300 Legacy
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
21/44, 5/16
1/2, 3/4
3/4
14–17
Reed Solomon
Revision 0
MN/SDM300L3.IOM
Modulation
BPSK
BPSK
QPSK, OQPSK
8-PSK
QPSK, OQPSK
8-PSK
8-PSK
BPSK
BPSK
QPSK, OQPSK
QPSK, OQPSK
BPSK, QPSK
BPSK
QPSK, OQPSK
8-PSK