Coding Techniques for Error Correction and Rewriting in Flash Memories

Simple item page
dc.contributorJiang, Anxiao
dc.contributorMiller, Scott L.
dc.creatorMohammed, Shoeb Ahmed
dc.date.accessioned2010-10-12T22:31:56Z
dc.date.accessioned2010-10-14T16:08:14Z
dc.date.accessioned2017-04-07T19:57:44Z
dc.date.available2010-10-12T22:31:56Z
dc.date.available2010-10-14T16:08:14Z
dc.date.available2017-04-07T19:57:44Z
dc.date.created2010-08
dc.date.issued2010-10-12
dc.description.abstractFlash memories have become the main type of non-volatile memories. They are widely used in mobile, embedded and mass-storage devices. Flash memories store data in floating-gate cells, where the amount of charge stored in cells ? called cell levels ? is used to represent data. To reduce the level of any cell, a whole cell block (about 106 cells) must be erased together and then reprogrammed. This operation, called block erasure, is very costly and brings significant challenges to cell programming and rewriting of data. To address these challenges, rank modulation and rewriting codes have been proposed for reliably storing and modifying data. However, for these new schemes, many problems still remain open. In this work, we study error-correcting rank-modulation codes and rewriting codes for flash memories. For the rank modulation scheme, we study a family of one- error-correcting codes, and present efficient encoding and decoding algorithms. For rewriting, we study a family of linear write-once memory (WOM) codes, and present an effective algorithm for rewriting using the codes. We analyze the performance of our solutions for both schemes.
dc.identifier.urihttp://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8476
dc.language.isoen_US
dc.subjectFlash Memories
dc.subjectRank Modulation
dc.subjectError Correction
dc.subjectKendall Tau distance
dc.subjectWrite Once Memory
dc.subjectRewriting Codes
dc.subjectWOM code
dc.subjectGeneralized WOM code
dc.titleCoding Techniques for Error Correction and Rewriting in Flash Memories
dc.typeBook
dc.typeThesis

Files

Collections

Texas A&M University at College Station