CS3410 Amphion Semiconductor Ltd., CS3410 Datasheet - Page 12

• Manufacturer Part Number: CS3410
• Description: High Speed Viterbi/TCM Decoder
• Manufacturer: Amphion Semiconductor Ltd.

Note
is as follows:
•
•
•
The default input vector format to the core is signed
magnitude.
Figure 14: Viterbi Mode Coding Performance
Figure 15: TCM Mode Coding Performance
Differential encoding/decoding marginally degrade (~0.2 dB) these gains.
12
CS3410
Continuous Viterbi operation at rate 1/2
Differential decoding ON
Automatic phase synchronization OFF
The default operation of CS3410 (without configuration)
1.00E+00
1.00E+00
1.00E-01
1.00E-02
1.00E-03
1.00E-04
1.00E-05
1.00E-06
1.00E-07
1.00E-08
1.00E-01
1.00E-02
1.00E-03
1.00E-04
1.00E-05
1.00E-06
1.00E-07
0
0 1
High Speed Viterbi/TCM Decoder
1
2
2
3
3
4
Eb/No [dB]
5
4
Eb/No [dB]
6
5
7
6
8
The CS3410 demonstrates high coding gains in all modes of
operation. In Viterbi mode a coding gain of 5.6 dB is
achievable in rate 1/3 and 5.2 dB in rate 1/2 with a decoded
BER of 10-5, as shown in Figure 14. In both TCM 2/3 and 3/4
modes coding gains of 3.3 dB and 3.5 dB respectively are
achievable, also with a decoded BER of 10-5 as shown in
Figure 15.
ERROR CORRECTING PERFORMANCE
7
9 10 11 12 13 14
8
9
10
11
12
Uncoded
QPSK
Uncoded
8-PSK
TCM 2/3
(8-PSK)
TCM 3/4
(16-PSK)
Uncoded
BPSK
Vit 1/2
Vit 1/3