Patent ID: 9048868
Filing Date: 2015-06-02
Classification: G11B,H03M

Abstract:
1. A method, comprising: deciding whether to adjust a finite impulse response (FIR) signal using a schedule that includes: (1) a number of unsuccessful iterations performed during soft output Viterbi decoding and (2) a number of unsuccessful iterations performed during low-density parity-check (LDPC) decoding; deciding whether to adjust a soft output from a soft output Viterbi decoder using the schedule; in the event it is decided to adjust the FIR signal: in the event it is decided to not adjust the FIR signal, using the soft output Viterbi decoder to perform Viterbi decoding on the FIR signal; in the event it is decided to adjust the soft output: in the event it is decided to not adjust the soft output, using the LDPC decoder to perform LDPC decoding on the soft output.