TY - GEN
T1 - Codes for Multi-Level Flash memories
T2 - 2007 IEEE International Symposium on Information Theory, ISIT 2007
AU - Cassuto, Yuval
AU - Schwartz, Moshe
AU - Bohossian, Vasken
AU - Bruck, Jehoshua
PY - 2007/12/1
Y1 - 2007/12/1
N2 - Several physical effects that limit the reliability and performance of Multilevel Flash memories Induce errors that have low magnitude and are dominantly asymmetric. This paper studies block codes for asymmetric limited-magnitude errors over q-ary channels. We propose code constructions for such channels when the number of errors is bounded by t. The construction uses known codes for symmetric errors over small alphabets to protect large-alphabet symbols from asymmetric limited-magnitude errors. The encoding and decoding of these codes are performed over the small alphabet whose size depends only on the maximum error magnitude and is independent of the alphabet size of the outer code. An extension of the construction is proposed to include systematic codes as a benefit to practical implementation.
AB - Several physical effects that limit the reliability and performance of Multilevel Flash memories Induce errors that have low magnitude and are dominantly asymmetric. This paper studies block codes for asymmetric limited-magnitude errors over q-ary channels. We propose code constructions for such channels when the number of errors is bounded by t. The construction uses known codes for symmetric errors over small alphabets to protect large-alphabet symbols from asymmetric limited-magnitude errors. The encoding and decoding of these codes are performed over the small alphabet whose size depends only on the maximum error magnitude and is independent of the alphabet size of the outer code. An extension of the construction is proposed to include systematic codes as a benefit to practical implementation.
UR - http://www.scopus.com/inward/record.url?scp=51649084291&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2007.4557123
DO - 10.1109/ISIT.2007.4557123
M3 - Conference contribution
AN - SCOPUS:51649084291
SN - 1424414296
SN - 9781424414291
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 1176
EP - 1180
BT - Proceedings - 2007 IEEE International Symposium on Information Theory, ISIT 2007
Y2 - 24 June 2007 through 29 June 2007
ER -