Simplified signal space detector for optical recording

Han Gyu Cho, Choong Chae Woo, Dae Sik Hong

Research output: Contribution to journalArticle

2 Citations (Scopus)


A signal space detector is a low-complexity approximation of fixed-delay tree search with decision feedback (FDTS/DF). This paper proposes the simplest version possible of a τ = 2 FDTS/DF for a minimum run-length constraint of d = 2. The hardware needs only two multiplications and additions, facilitating high data-rate/low-complexity implementations. Simulation results show that the performance of the proposed detector equals that of the τ = 2 FDTS/DF even when jitter noise is present. It is shown that for d = 2, a partial response maximum-likelihood detector with the target response ∑k=03 Dk outperforms one with (1 + D)3 because of good spectral matching at normalized density S ≥ 4.6.

Original languageEnglish
Pages (from-to)3566-3569
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number5 II
Publication statusPublished - 2002 Sep 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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