beautypg.com

Modulation and encoding types, 2 modulation and encoding types – Comtech EF Data SDM-300L3 User Manual

Page 314

background image

SDM-300L3 Satellite Modem

Revision 0

Specifications

MN/SDM300L3.IOM

14–8

14.5.2 Modulation

and Encoding Types

The following combinations of modulation and forward error correction encoding are
available.

Table 14-5. Modulation and Encoding Types

Encoder

Code Rate

Reed-Solomon

Modulation

Viterbi, K7

1/2

BPSK

Viterbi, K7

1/2

225/205 Closed

BPSK

Viterbi, K7

1/2, 3/4, 7/8

QPSK, OQPSK

PTCM 2/3

8-PSK

Viterbi, K7

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

QPSK
QPSK/OQPSK
QPSK
QPSK

PTCM
(RS EFD Compatible)

2/3

225/205 [ ] Closed or IDR T1
126/112 [ ] IBS and D&I
219/201 [ ] IDR E1

8-PSK

PTCM
(RS 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 1/2

BPSK

Sequential

1/2

225/205 [ ] Closed

BPSK

Sequential

1/2, 3/4, 7/8

QPSK, OQPSK

Sequential

1/2, 3/4, 7/8

225/205 [ ] Closed

QPSK, OQPSK

Uncoded 1/1

BPSK,

QPSK,OQPSK

Turbo Product

21/44, 5/16

BPSK

Turbo Product

1/2, 3/4

QPSK,OQPSK

Turbo Product

3/4

8-PSK

Note: Interleaver depths are selectable at: 4, 8, or 16. The values shown are default or Open Network
specified.