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TMTR Codes for Partial Response Channels
Hui-Feng TSAI Pi-Hai LIU Yinyi LIN
IEICE TRANSACTIONS on Electronics
Publication Date: 2005/09/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Storage Technology
time-varying maximum transition run code, partial response maximal likelihood channel, storage, magnetic recording,
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A TMTR code is specified as (=2,=3,k) constraint. In this work, an approach for constructing (=2,=3,k) codes is presented. Based on this construction, a rate 8/9 code with k=7 is found. This code can achieve better timing recovery performance compared to the proposed previously TMTR code with k=11. An enumerating encoder and decoder exist for constructed (=2,=3,k) codes. A look-up table for the encoder/decoder is not required. Simulation results on an E2PRIV recording channel reveal that the TMTR code provides 2.2 dB gain over an uncoded case.