Modified trace-back using soft output Viterbi algorithm (SOVA)

摘要

Systems and methods are provided for generating error events for decoded bits using a Soft output Viterbi algorithm (SOVA). A winning path through a trellis can be determined and decoded information can be generated. Path metric differences can be computed within the trellis based on the winning path. A plurality of error event masks and error event metrics can be generated based on the decoded information and the path metric differences.