AHA4540B-086PQC View Datasheet(PDF) - Unspecified
Part Name
Description
Manufacturer
AHA4540B-086PQC Datasheet PDF : 4 Pages
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CODE TYPES
comtech aha corporation
Table 1 shows a partial list of the codes supported by this product. Note that this is not a complete list
of base codes. In addition, each of the codes listed can be shortened to achieve smaller block size with only
minor changes to code rate.
Table 1: Partial Code List
CODE
(X)x(Y)x(Z)
(128,127)x(128,126)+
(128,120)x(128,126)+
(128,120)x(128,120)
(64,57)x(16,15)x(16,15)
(128,127)x(64,62)+
(128,120)x(64,62)+
(128,120)x(64,57)
(32,26)x(16,15)x(16,15)
(64,63)x(64,62)+
(64,57)x(64,57)
(64,63)x(32,30)+
(64,57)x(32,26)
(32,26)x(32,26)
BLOCK SIZE
(bits)
DATA SIZE
(bits)
RATE
CODING GAIN
(dB)
# ITERATIONS
AT 155 mBPS
16384
16002 0.977
4.3
4
16384
15120 0.923
5.5
5
16384
14400 0.879
6.5
6
16384
12825 0.783
6.9
4
8192
7874 0.961
4.4
4
8192
7440 0.908
5.5
4
8192
6840 0.84
6.5
5
8192
5850 0.714
7.2
4
4096
3906 0.954
4.5
3
4096
3249 0.793
6.9
4
2048
1890 0.923
4.5
3
2048
1482 0.724
6.9
3
1024
676 0.660
6.3
2
+ enhanced TPC (includes hyper diagonal axis).
Figure 1: Turbo Product Code Encoder/Decoder
ENCODER
ENC_DATA
CRC
Insertion
Scrambler
TPC
Encoder
Helical
Interleaver
Sync
Constellation
Insertion
Mapper
XMIT_DATA
DECODER
DEC_DATA
CRC
Verification
Descrambler
TPC
Decoder
Helical
Deinterleaver
Sync
Detection
Soft
Metric
Computation
REC_DATA
uP_INT
Microprocessor Interface,
Control and Status
Registers
AHA4540
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