Research on MLC NAND Flash Memory Based on Weighted Bit-flipping Decoding Algorithm

Multi-level cell(MLC) increases the storage density of NAND flash memory, while the Cell-to-Cell interference (CCI) is enhanced, and the reliability of NAND flash memory is decreased. On the research of MLC channel model and CCI noise model, this paper proposes a weighted bit-flipping decoding algorithm for MLC NAND flash memory. The simulation results show that this method can ensure the reliability of the NAND flash memory, while maintaining low decoding complexity, so as to realize a better tradeoff between complexity and decoding performance.