Patent ID: 8266511
Filing Date: 2012-09-11
Classification: H03M

Abstract:
1. A decoding device, comprising: an Add Compare Select operator calculating two path metric values corresponding to received data to be decoded based on a branch metric value and outputting one of the path metric values and a path metric difference between the two path metric values; a correction term calculator coupled to the Add Compare Select operator to receive the path metric difference, to calculate and output a correction term based on the path metric difference and noise included in the received data, the correction term being adjusted based on a size of the received data which is not utilized for a calculation of a branch metric value; and a correction operator coupled to the correction term calculator and the Add Compare Select operator to receive the path metric value from the Add Compare Select operator, to receive the correction term adjusted based on the noise included in the received data from the correction term calculator, and to add the adjusted correction term to the path metric value.