Patent ID: 9083386
Filing Date: 2015-07-14
Classification: H03M

Abstract:
1. An electronic apparatus comprising: a generating unit that generates a soft decision likelihood value based on an input signal; a decoding unit that with respect to the soft decision likelihood value, executes a decoding process supporting a convolutional code; a first interleaving unit that interleaves the order of a data series acquired by the decoding process such that errors occurring in burst in the data series are converted into random errors; a correcting unit that generates decoded data corresponding to the input signal by executing an error correcting process on the data series that has been interleaved by the first interleaving unit; a detecting unit that based on position information of a symbol for which error has been corrected successfully by the error correcting process, estimates whether an error occurs with respect to a symbol for which error cannot be corrected due to a failure of the error correcting process and detects a position of the symbol that is estimated to have an error; a calculating unit that based on the decoded data and information concerning the position of the symbol estimated to have an error, calculates a correction value of the soft decision likelihood value; and a second interleaving unit that interleaves the order of a correction value series of the soft decision likelihood value into an order that is a reverse of the order resulting from interleaving by the first interleaving unit, wherein the correction value series of the soft decision likelihood value resulting from interleaving by the second interleaving unit is fed back to the decoding unit.