Method and apparatus for interference mitigation soft demapping and cell in the flash memory .

摘要

Method and the device for interference reduction between software dematsupingu and the cell in flash memory are offered. In drastic change kind, per 1 cells the target cell in the flash memory device which at least can house two data levels and s, at least it regards one in flash memory target cell the reading value which was measured, at least, one on one in flash memory on the basis of the pattern of the value to which thing and the flash memory which acquire value and h which display the data which is housed at least in regard to one in thing and the flash memory which acquire r aguretsusa cell are housed at least in one part, target cell or plural aguretsusaIt is grasped by calculating plural logarithm likelihood ratios at least appraising one which is selected one which has the disturbance of pattern dependence of the cell or selecting plural probability density functions, the reading value which was measured, on the basis of r, probability density function, and on the basis of the result of the step which is appraised, one or.