Quasi-Reduced-State Soft-Output Viterbi Detector for Magnetic Recording Read Channel

• Published in: IEEE transactions on magnetics Vol. 43; no. 10; pp. 3921 - 3924
• Main Authors: Sun, Fei, Zhang, Tong
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.10.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Blocking; Channels; Computation; Critical path; Cross-disciplinary physics: materials science; rheology; Data storage; Design methodology; Detectors; E2PR4 channel; Energy consumption; Exact sciences and technology; Feedback; Feedback circuits; Magnetic recording; Magnetism; Materials science; Memory; Other topics in materials science; Physics; Pipeline processing; Potential energy; reduced-state sequence detector; soft-output Viterbi algorithm (SOVA); State feedback; Studies; Viterbi algorithm; E2PR4 channel; reduced-state sequence detector; soft-output Viterbi algorithm (SOVA); Magnetic recording; Magnetic properties

Reduced-state trellis detection with decision feedback is widely used to reduce the energy consumption of trellis detectors, particularly for soft-output trellis detectors that are energy-hungry by nature. However, the decision feedback tends to increase the circuit critical path and, more important...