Mutual-Information Optimized Quantization for LDPC Decoding of Accurately Modeled Flash Data

@article{Wang2012MutualInformationOQ,
  title={Mutual-Information Optimized Quantization for LDPC Decoding of Accurately Modeled Flash Data},
  author={Jiadong Wang and Guiqiang Dong and Tong Zhang and Richard D. Wesel},
  journal={CoRR},
  year={2012},
  volume={abs/1202.1325}
}
High-capacity NAND flash memories use multi-level cells (MLCs) to store multiple bits per cell and achieve high storage densities. Higher densities cause increased raw bi t error rates (BERs), which demand powerful error correcting codes . Low-density parity-check (LDPC) codes are a well-known class of capacity-approaching codes in AWGN channels. However, LDPC codes traditionally use soft information while the flash read channel provides only hard information. Low resolution soft information… CONTINUE READING
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