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Reduced-complexity modified per-survivor iterative timing recovery using M-algorithm for magnetic recording system
Author(s)
Date Issued
December 1, 2011
Type
Conference Paper
Abstract
A modified per-survivor iterative timing recovery (MPS-ITR), which jointly performs timing recovery, equalization, and error-correction decoding, has been proposed in [1] to deal with the problem of timing recovery operating at low signal-to-noise ratio. Practically, this scheme exploits a split-preamble strategy in conjunction with a per-survivor soft-output Viterbi algorithm equalizer to make it more robust against severe timing jitters or cycle slips. Although the MPS-ITR outperforms other iterative timing recovery schemes [1], it still has very high complexity. In this paper, we propose a reduced-complexity MPS-ITR scheme (denoted as MPS-ITR-M) to make it more implementable in real-life applications. This is achieved by applying the M-algorithm [2] to the MPS-ITR. Numerical results indicate that at low-to-moderate complexity, the MPS-ITR-M will perform better than other schemes. © 2011 IEEE.
Citation
2011 International Symposium on Intelligent Signal Processing and Communications Systems the Decade of Intelligent and Green Signal Processing and Communications Ispacs 2011, 2011