Optimal Detector for Multilevel NAND Flash Memory Channels with Intercell Interference

  title={Optimal Detector for Multilevel NAND Flash Memory Channels with Intercell Interference},
  author={Meysam Asadi and Xiujie Huang and Aleksandar Kavcic and Narayana P. Santhanam},
  journal={IEEE Journal on Selected Areas in Communications},
In this paper we derive the optimal detector for multilevel cell (MLC) flash memory channels with intercell interference (ICI). We start with the MLC channel model proposed by Dong et al. and just slightly alter the model to guarantee mathematical tractability of the optimal detectors (maximum likelihood and maximum a-posteriori sequence and symbol detectors). The optimal detector is obtained by computing branch metrics using Fourier transforms of analytically computable characteristic… CONTINUE READING
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  • Simulation results show that the hard-output bit error rate (BER) performance matches some previously known detectors, but that the soft-output detector outperforms previously known detectors by 0.35 dB.


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