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Title: Decision-directed correction for bloom in optical recording channels
Authors: Gopalaswamy, S.
Kee, N.S.
Farhang-Boroujeny, B. 
Keywords: Bloom
Decision directed correction
Optical recording
Read channel
Threshold adaptation
Issue Date: 2000
Citation: Gopalaswamy, S.,Kee, N.S.,Farhang-Boroujeny, B. (2000). Decision-directed correction for bloom in optical recording channels. Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers 39 (2 B) : 834-836. ScholarBank@NUS Repository.
Abstract: A threshold adaptation scheme is proposed in a non-Viterbi simple detector for d = 2 minimum run-length-constraint coded optical recording schemes, to increase robustness to bloom. The detector has a simple structure comprising of a threshold detector, post processing error correction, and decision directed threshold adaptation. The equalization target is a free symmetric 7-tap target and the detection exploits the d = 2 constraint in the input sequence. The detector is evaluated for digital versatile disk (DVD) specifications and compared with other threshold-based detectors as well as Viterbi detectors following targets of length up to 5. Performance improvement of over 1.5 dB is observed with the proposed feature for bloom larger than 15% of the channel bit period. © 2000 Publication Board, Japanese Journal of Applied Physics.
Source Title: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
ISSN: 00214922
Appears in Collections:Staff Publications

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