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Demodulation and fec decoding types, Descrambling types, 2 demodulation and fec decoding types – Comtech EF Data C5 User Manual

Page 58: 3 descrambling types

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Specifications

C5/K1/K3 Integrated Satellite Terminal System

2–24

Rev. 0

2.2.5.2

Demodulation and FEC Decoding Types

Refer to Table 2-16 for combinations of the modulation and forward error correction
encoding.

Table 2-16. Ku-Band Demodulation and Encoding Types

Encoder

Code Rate

Modulation

Viterbi, K7

1/2

BPSK

Viterbi, K7
Reed-Solomon

1/2
225/205 Closed

BPSK
BPSK

Viterbi, K7

1/2, 3/4, 7/8

QPSK

Viterbi, K7
Reed-Solomon

1/2, 3/4, 7/8
225/205 Closed

QPSK
QPSK

Sequential

1/2

BPSK

Sequential
Reed-Solomon

1/2
225/205 Closed

BPSK
BSPK

Sequential (EFD,
CSD, FDC)

1/2, 3/4, 7/8

QPSK

Sequential
Reed-Solomon

1/2, 3/4, 7/8
225/205 Closed

QPSK
QPSK

2.2.5.3 Descrambling

Types

The customer may select one of the following:

( CCITT V.35 (EFData/Comstream compatible). Sequential only.

( CCITT V.35 INTELSAT modified. Viterbi only.

( Fairchild compatible. Sequential only.

( 2

15

-1 Synchronous for use in ASYNC overhead mode.

( Modified V.35 (Closed Network Reed-Solomon).

( None.

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