LDPC DECODING OF NAND FLASH MEMORY BY SOFT DECISION ERROR CORRECTION METHOD
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 0, Vol 4, Issue 11
Abstract
The reliability of data stored in an high-density Flash memory devices tends to drop off rapidly because of the reduced cell size and multilevel cell technology. The Soft-decision error correction algorithms make use of multiple-precision sensing for reading memory which can solve this problem. They require a very complex hardware for high-throughput decoding method. In this method, we present a rate-0.97 (68254, 65536) summarized Euclidean geometry low-density parity-check code and its VLSI operation for increased throughput NAND Flash memory system. The aim employ the normalized a posterior probability (APP)-based algorithm, serial schedule, and unrestricted update, which will lead to simple functional unit, halve decoding iterations, and compact power consumption. The pipelined equivalent structural design is adopted for high-throughput decode, and memory-reduction techniques is employed to minimize the total chip size. The proposed decoder method is implemented in 0.13-μm CMOS tools, and the chip size and power consumption of the decoder are compared with those that of a BCH (Bose–Chaudhuri–Hocquenghem) decoding circuit performance compared with the error-correcting presentation and throughput.
Authors and Affiliations
S. Hasma Shruthi
Keywords
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