DEVICE DECODES INPUT DATA USING PATH METRIC AND DECODING METHOD USING THEREOF

摘要

Disclosed is a device of decoding input data by using a path metric and a decoding method using the same. According to the present invention, the device of decoding input data including first candidate data and second candidate data by using a polar code comprises: a first path metric processor for receiving a first parent path metric, generating a plurality of first candidate path metrics from the first parent path metric by decoding the first candidate data, and outputting at least one of the first candidate path metrics as at least one child path metric based on a confidence value of the first candidate path metrics; and a second path metric processor for receiving a second parent path metric, generating a plurality of second candidate path metrics from the second parent path metric by decoding the second candidate data, and outputting at least one of the second candidate path metrics as at least one second child path metric based on a confidence value of the second candidate path metrics, wherein the number of the at least one first child path metric is different from the number of the at least one second child path metric.