Demodulation and fec decoding types, 2 demodulation and fec decoding types – Comtech EF Data SDM-300A User Manual

Page 370

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SDM-300A Satellite Modem

Revision 6

Specifications

MN/SDM300A.IOM

19–14

19.5.2

Demodulation and FEC Decoding Types

Table 19-8 shows combinations of demodulation and forward error correction decoding.

Table 19-8. Demodulation FEC Decoding

Decoder

Code Rate

Modulation

Viterbi, K7

½

BPSK

Viterbi, K7
Reed-Solomon

½
225/205 Closed

BPSK

Viterbi, K7

½, ¾, 7/8

QPSK, OQPSK

Viterbi, K7, TCM

2/3

8-PSK

Viterbi, K7
Reed-Solomon

½, ¾, 7/8
225/205 Closed or IDR T1,

126/112 IBS and D&I,
219/201 IDR E1

QPSK, OQPSK

Viterbi, K7, TCM
Reed-Solomon
EFD
Compatible

2/3
225/205 Closed or IDR T1,

126/112 IBS and D&I,
219/201 IDR E1

8-PSK

Viterbi, K7, TCM
Reed-Solomon
IESS-310
Compatible

2/3
219/201 [4] No Overhead,

219/201 [4] IBS and D&I,
219/201 [8] IDR T1/E1

8-PSK

Sequential ½

BPSK

Sequential
Reed-Solomon

½
225/205 Closed

BPSK

Sequential

½, ¾, 7/8

QPSK, OQPSK

Sequential
Reed-Solomon

½, ¾, 7/8
225/205 Closed

QPSK, OQPSK
QPSK, OQPSK

Turbo 21/44,

5/16 BPSK

Turbo

½, ¾

QPSK, OQPSK

Turbo ¾

8-PSK

Uncoded

1/1

BPSK, QPSK, OQPSK

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