Optimized Degree Distributions for Binary and Non-Binary LDPC Codes in Flash Memory

Abstract: This paper uses EXIT-function analysis employing the reciprocal channel approximation (RCA) to obtain optimal LDPC code degree distributions for initial hard decoding (one-bit quantization of the channel output) and for decoding with the soft information provided by additional progressive reads in both SLC (two- level cell) and MLC (four-level-cell) Flash memory.

Bio: Kasra Vakilinia is a Ph.D. candidate in Electrical Engineering Department at the University of California , Los Angeles (UCLA). He is a member of the UCLA Communication Systems Laboratory (CSL) and UCLA Center on Development of Emerging Storage Systems (CoDESS). His research interests include coding theory, information theory, flash memory storage systems, and communications systems.