Apparatus and method for signal processing

摘要

A maximum error region determining unit determines a region having a maximum likelihood of error from a channel signal y(t). An optimal path searching unit uses only an error signal at the region having a maximum likelihood of error to find a minimum error generation path and to correct the error signal. A signal recovery unit applies a predetermined algorithm to the channel signal y(t) in which a part of the signal has been corrected by the optimal path searching unit in order to recover an original recorded signal ak. The signal processing apparatus and method search for an optimal path of a channel signal only in the maximum error generation region, thereby reducing complexity and simplifying implementing hardware while allowing for signal processing without change in hardware where changes in a channel model or conditions of an input signal occur.