Data detection and decoding system and method

Abstract

A data detection and decoding system includes a SOVA channel detector that uses single parity (SOVASP) to improve the accuracy with which the detector estimates bits. Each column or row read back from the read channel constitutes a code word and each code word is encoded to satisfy single parity. Because the SOVASP channel detector detects whether each code word satisfies single parity, it is unnecessary to use both a column decoder and a row decoder in the channel decoder. Either the row decoder or the column decoder can be eliminated depending on whether bits are read back on a column-by-column basis or on a row-by-row basis. This reduction in components reduces hardware complexity and improves system performance. The output of the row or column decoder is received by a second detector that processes the output received from the decoder to recover the original information bits.

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