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Amalgamated q-ary codes for multi-level flash memories | IEEE Conference Publication | IEEE Xplore

Amalgamated q-ary codes for multi-level flash memories


Abstract:

A flash memory is a non-volatile memory based on electron storing mechanism. A multi-level flash memory cell can store one of q symbols (q >; 2). As q increases, the data...Show More

Abstract:

A flash memory is a non-volatile memory based on electron storing mechanism. A multi-level flash memory cell can store one of q symbols (q >; 2). As q increases, the data becomes less reliable and the probability it may be distorted by different types of errors increases. This paper presents an amalgamated q-ary code capable of correcting a mixture of ts symmetric errors and additional ta asymmetric errors of limited magnitude l. In the proposed code, each q-ary codeword is composed of n multi-bit symbols, each multi-bit (i.e. q-ary) symbol is viewed as two sub-symbols over two different alphabets. The new construction has higher code rate than the conventional single-alphabet code.
Date of Conference: 03-05 October 2012
Date Added to IEEE Xplore: 13 December 2012
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Conference Location: Austin, TX, USA

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