A Channel and Source Coding Approach for the Binary Asymmetric Channel with Applications to MLC Flash Memories

Conference: SCC 2017 - 11th International ITG Conference on Systems, Communications and Coding
02/06/2017 - 02/09/2017 at Hamburg, Germany

Proceedings: ITG-Fb. 268: SCC 2017

Pages: 6Language: englishTyp: PDF

Personal VDE Members are entitled to a 10% discount on this title

Freudenberger, Juergen; Rajab, Mohammed (Institute for System Dynamics, Konstanz, Germany)
Shavgulidze, Sergo (Faculty of Power Engineering and Telecommunications, Georgian Technical University, Georgia)

The binary asymmetric channel (BAC) is a model for the error characterization of multi-level cell (MLC) flash memories. This contribution presents a joint channel and source coding approach improving the reliability of MLC flash memories. The objective of the data compression algorithm is to reduce the amount of user data such that the redundancy of the error correction coding can be increased in order to improve the reliability of the data storage system. Moreover, data compression can be utilized to exploit the asymmetry of the channel to reduce the error probability. With MLC flash memories data compression has to be performed on block level considering short data blocks. We present a coding scheme suitable for blocks of 1 kilobyte of data.