FPGA Accelerator of Algebraic Quasi Cyclic LDPC Codes for nand Flash Memories

Efficient FPGA-based Architectures of Finite Alphabet Iterative Decoders for Flash Memories

We present finite alphabet iterative decoders (FAIDs) for hard-decision decoding and 2-bit precision softdecision decoding of column-weight-four low-density paritycheck (LDPC) codes which are applicable for flash memories, and discuss their hardware implementations on FPGA. We show that 3-bit FAIDs provide superior error-rate performance in the error floor compared to 4-bit and 5-bit offset-min...

Secure NAND Flash Architecture Resilient to Strong Fault-Injection Attacks Using Algebraic Manipulation Detection Code

Multi-level cell (MLC) NAND flash memories are widely used because of their high data transfer rate, large storage density and long mechanical durability. Linear error correcting codes (ECC) such as Reed-Solomon (RS) codes and Bose-Chaudhuri-Hocquenghem (BCH) codes are often used for error correction. Although linear codes can efficiently detect and correct random errors, they are not sufficien...

On the Grobner Basis of a Family of Quasi-Cyclic LDPC Codes

An Alternative FPGA Implementation of Decoders for Quasi-Cyclic LDPC Codes

Due to their Shannon-limit-approaching performance and low-complexity decoding, low-density parity-check (LDPC) codes have been used for forward error correction in a broad-range of communication and storage systems. In addition to its low-complexity, the iterative decoding algorithm used for decoding LDPC codes is inherently parallel. To exploit the parallelism at a larger extent, a significan...

Design and Implementation of FPGA System to Reduce Reed- Solomon Errors

The data reliability has become an important issue in most communication and storage systems for high speed operation and mass data process. Various error correction code are provided for improving data reliability. A Reed-Solomon code is quite suitable for burst errors, but in case of random errors, it has some difficulty. For MLC NAND flash memories, BoseChaudhuriHocquenghem (BCH) codes are f...