TY - GEN
T1 - D-imbalance WOM codes for reduced inter-cell interference in multi-level NVMs
AU - Hemo, Evyatar
AU - Cassuto, Yuval
N1 - Publisher Copyright: © 2016 IEEE.
PY - 2016/8/10
Y1 - 2016/8/10
N2 - In recent years, due to the spread of multi-level nonvolatile memories (NVM), q-ary write-once memories (WOM) codes have been extensively studied. By using WOM codes, it is possible to rewrite NVMs t times before erasing the cells. The use of WOM codes enables to improve the performance of the storage device, however, it may also increase errors caused by inter-cell interference (ICI). This work presents WOM codes that restrict the imbalance between code symbols throughout the write sequence, hence decreasing ICI. We first specify the imbalance model as a bound d on the difference between codeword levels. Then a 2-cell code construction for general q and input size is proposed. An upper bound on the write count is also derived, showing the optimality of the proposed construction. The new codes are also shown to be competitive with known codes not adhering to the bounded imbalance constraint.
AB - In recent years, due to the spread of multi-level nonvolatile memories (NVM), q-ary write-once memories (WOM) codes have been extensively studied. By using WOM codes, it is possible to rewrite NVMs t times before erasing the cells. The use of WOM codes enables to improve the performance of the storage device, however, it may also increase errors caused by inter-cell interference (ICI). This work presents WOM codes that restrict the imbalance between code symbols throughout the write sequence, hence decreasing ICI. We first specify the imbalance model as a bound d on the difference between codeword levels. Then a 2-cell code construction for general q and input size is proposed. An upper bound on the write count is also derived, showing the optimality of the proposed construction. The new codes are also shown to be competitive with known codes not adhering to the bounded imbalance constraint.
UR - http://www.scopus.com/inward/record.url?scp=84985991234&partnerID=8YFLogxK
U2 - https://doi.org/10.1109/ISIT.2016.7541437
DO - https://doi.org/10.1109/ISIT.2016.7541437
M3 - منشور من مؤتمر
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 940
EP - 944
BT - Proceedings - ISIT 2016; 2016 IEEE International Symposium on Information Theory
T2 - 2016 IEEE International Symposium on Information Theory, ISIT 2016
Y2 - 10 July 2016 through 15 July 2016
ER -