Index-less flash codes with arbitrary small slices

This paper proposes a novel flash code which is based on the index-less indexed flash codes (ILIFC) but uses significantly small slices of flash cells. ILIFC has good write deficiency in the worst-case scenario, though, the code-rate and the average write deficiency are severely restricted because the size of an internal data block, which is called a slice, is rather large and not adjustable. In this study, a technique is developed to reduce the size of slices in ILIFC-like flash codes. The improvement relaxes the severe constraint on the code-rate, and additionally, contributes to reduce the average write deficiency of the flash code.