Error-Prediction LDPC and Error-Recovery Schemes for Highly Reliable Solid-State

Abstract

Highly reliable solid-state drives (SSDs) with error-prediction low-densit y parity-check (EP-LDPC) and error-recovery schemes are prop osed. Since the reliability of the NAND flash memory of the SSD is ser iously degraded as the scaling, the conventional error -correction scheme is becoming useless. Thus, LDPC error-correcting code (ECC) is considered to be the next-generation ECC for SSD. However, many read cycles are required and the LDPC scheme consumes an unacceptably long read time. To solv