L64724 LSI Logic Corporation, L64724 Datasheet - Page 176

• Manufacturer Part Number: L64724
• Description: Satellite Receiver
• Manufacturer: LSI Logic Corporation

Figure 7.3
7-6
Rate 5/6
Rate 6/7
Rate 7/8
Data (QPSK)
Data (QPSK)
L64724 Input
Data (QPSK)
L64724 Input
Data (BPSK)
Data (BPSK)
Data (BPSK)
Viterbi Input
Viterbi Input
Viterbi Input
Viterbi Input
Punctured
Punctured
Punctured
Puncture Pattern for Different Code Rates (Cont.)
Data
Data
Data
The FEC Decoder Pipeline
Q
Q
Q
I
I
I
I
I
I
Q.1
I.1
Q.1
I.1
Q.1
I.1
I.1
I.1
I.1
I.1
Q1
I.1
Q.1
I.1
Q.1
Q.2
I.2
I.2
Q.2
I.2
Q.2
I.1
Q.1
Q.1
Q.3
Punctured Symbol (Deleted)
I.3
I.3
Q.3
I.3
Q.3
Q.2
I.3
Q.2
Q.3
Q.2
Q.3
I.2
Q.2
Q.4
Q.2
I.4
I.4
Q.4
I.4
Q.4
Q.4
I.5
I.4
Q.5
Q.5
Q.4
I.5
I.5
I.5
Q.5
I.5
Q.5
I.3
I.3
Q.3
Q.6
I.6
I.6
Q.6
I.6
Q.7
I.4
Q.4
Q.6
I.7
Q.4
Q.7
I.7
I.7
Q.7
Q.8
I.5
I.8
I.5
I.5
I.7
Q.8
Q.9
I.9
I.6
Q.6
Q.10
I.10
I.9
Q.10
I.7
I.7
Q.11
I.11
I.11
Q.12
Q.12
I.12