Constructive ITI Coded PRML System Based on Two Track Model for Perpendicular Magnetic Recording
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چکیده
Constructive inter-track interference (CITI) codes based on readback level have been investigated not to have the transitions which give readback pulses of opposite polarity from adjacent tracks in the perpendicular magnetic recording (PMR) channel with a differentiator [1]. Because it is however impossible to design such CITI codes for the PMR channel without a differentiator, CITI codes based on equalized level were also investigated [2]. In this paper, we study not only the new CITI code based on the equalized level of class-I partial response (PR1) [3] but also Viterbi detection using new algorithm taking account the ITI from adjacent tracks.
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تاریخ انتشار 2007