LDPC Decoding: VLSI Architectures and Implementations

More documents

Recommendations

Info

Parallel Min1-Min2 finder The inputs r,s,t,u form two bitonic sequences. r <strong>and</strong> s form a bitonic sequence of increasing order(i.e ru). Min1-Min2 finder using hierarchical approach of using PBM4+ to build PBM8+ Flash Memory Summit 2013 Santa Clara, CA 36
Block Parallel Layered Decoder Compared to other work, this work has several advantages 1) Only one memory for holding the P values. 2) Shifting is achieved through memory reads. Only one memory multiplexer network is needed instead of 2 to achieve delta shifts 1) Value-reuse is effectively used for both Rnew <strong>and</strong> Rold 2) Low complexity data path design-with no redundant data Path operations. 5) Low complexity CNU design with high parallelism. 6) Smaller pipeline depth Here M is the row parallelization (i.e. number of rows in H matrix Processed per clock). Flash Memory Summit 2013 Santa Clara, CA 37
Page 1 and 2: LDPC Decoding: VLSI Architectures a
Page 3 and 4: LDPC Decoding, Quick Recap 1/5 Bit
Page 5 and 6: LDPC Decoding, Quick Recap 3/5 Nota
Page 7 and 8: LDPC Decoding, Quick Recap 5/5 (B)
Page 9 and 10: Check Node Unit (CNU) Design ( i) i
Page 11 and 12: CNU Micro Architecture for minsum F
Page 13 and 14: Example QC-LDPC Matrix H = ⎡I ⎢
Page 15 and 16: Non-Layered Decoder Architecture Su
Page 17 and 18: Non-Layered Decoder Architecture fo
Page 19 and 20: Layered Decoder Architecture Optimi
Page 21 and 22: Data Flow Diagram Flash Memory Summ
Page 23 and 24: Irregular QC-LDPC H Matrices Differ
Page 25 and 26: Irregular QC-LDPC H Matrices E
Page 27 and 28: Data Flow Diagram Flash Memory Summ
Page 29 and 30: Illustration for out-of-order proce
Page 31 and 32: Out-of-order block processing for P
Page 33 and 34: Memory organization • Q memory wi
Page 35: Parallel CNU Flash Memory Summit 20
Page 39 and 40: Layered Decoder Throughput Results-
Page 41 and 42: Layered Decoder for Flash Channel D
Page 43 and 44: Design considerations • The desig
Page 45 and 46: Some of architecture variations, 1/
Page 47 and 48: Architecture Variations, 3/5 FS MES
Page 49 and 50: 1428 Architecture Variations, 5/5 C
Page 51: References [Contd] & Important Info

LDPC Decoding: VLSI Architectures and Implementations

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?