LDPC Decoding: VLSI Architectures and Implementations
LDPC Decoding: VLSI Architectures and Implementations
LDPC Decoding: VLSI Architectures and Implementations
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1428<br />
Architecture Variations, 5/5<br />
CONTROL<br />
1404<br />
Q SUBTRACTOR<br />
ARRAY<br />
1414<br />
1400<br />
FS MEMORY<br />
LAYER 1<br />
LAYER 2<br />
LAYER m-1<br />
-<br />
+<br />
+<br />
CYCLIC<br />
SHIFTER<br />
FIG. 14<br />
R<br />
SELECT<br />
1412<br />
1416<br />
R OLD<br />
1410<br />
Q SHIFT<br />
1406<br />
1418<br />
MUX<br />
P<br />
1430<br />
P MEMORY<br />
DOUBLE<br />
BUFFERED<br />
1420<br />
SIGN MEMORY<br />
LAYER 1<br />
LAYER 2<br />
LAYER m-1<br />
Q SIGN BIT<br />
1408<br />
1402<br />
CNU<br />
ARRAY<br />
CHANNEL<br />
LLR<br />
1424<br />
R NEW<br />
1426<br />
P OLD<br />
R OLD<br />
DELAYED<br />
-<br />
+<br />
+<br />
+ +<br />
+<br />
Flash Memory Summit 2013<br />
Santa Clara, CA 49