PROCESSOR AND PROCESSING METHOD

摘要

Two path-metrics (PM0 and PM1) are read out from a path-metric storing means (1) and two branch-metrics (BM0 and BM1) are read out from a branch-metric storing means (3). A comparing means (5), an adding means (6), a compared-result storing means (7), and a selecting means (8) perform ACS operation by using (PM0+BM0) and (PM1+BM1). In parallel with the ACS operation, a comparing means (9), an adding means (10), a compared-result storing means (11), and a selecting means (12) perform the ACS operation by using (PM0+BM1) and (PM1+BM0).