Mocomtech CDM-570 User Manual

Page 201

Advertising
background image

CDM-570/570L Satellite Modem with Optional IP Module

Revision 4

Forward Error Correction Options

MN/CDM570L.IOM

1E-9

1E-8

1E-7

1E-6

1E-5

1E-4

1E-3

1E-2

1E-1

1 2 3 4 5 6 7 8 9 10 11 12

Eb/No in dB

Specification

Limit Rate 1/2

and 220,200

Outer Code

Uncoded BPSK/QPSK

1 2 3 4 5 6 7 8 9 10 11 12

BER

Viterbi with

concatenated

RS 220,200

Outer Code

Combined sync

threshold, demod

and Viterbi

Decoder, Rate 1/2

Sync

threshold,

Rate 3/4

Specification

Limit Rate 3/4

and 220,200

Outer Code

Specification

Limit Rate 7/8

and 220,200

Outer Code

Sync

threshold,

Rate 7/8

Typical performance

Figure 7-2. Viterbi with concatenated RS Outer Code

7–11

Advertising
This manual is related to the following products: