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In order to improve the storage density of magnetic recording, the shingled magnetic recording method is used. However, this method have a problem of interference between adjacent tracks. Therefore, many studies to prevent the performance degradation due to interference between the adjacent track have been conducted. In this paper, in order to solve inter-track interference, we propose a model to remove inter-track interference. In the case of overlap between tracks is 10% or more, the proposed model shows the performance improvement. ※   2013 ()      (NRF-2013R1A1A2059077). First Author : Soongsil University, School of Electronic Engineering, kimbs@ssu.ac.kr,  ° Corresponding Author : Soongsil University, School of Electronic Engineering, zlee@ssu.ac.kr,  :KICS2014-08-325, Received August 27, 2014; Revised September 4, 2014; Accepted September 4, 2014 I.                     .                    .             .         SMR (Shingled Magnetic Recording)    .  1 SMR  , N-1      , N  SW(Squeeze Width) .  N       N+1   SW  .   SW α  .  1 WTW(Write Track Width)   , TW(Track Width)    . α              /             509 Fig. 1. Shingled Magnetic Recording  ,    (Inter-Track Interference, ITI)  . SMR             , SMR     ITI     .   ITI        .      (Maximum-Likelihood, ML)  ,     ITI       (Bit Error Rate, BER)    .    single-head/successive-multi-track   ,    LLRs (LogLikelihood Ratios)       .  ITI                  .   ITI   ITI           .   II ITI   ITI     , III          .  IV    . II.      2.1 ITI     /            .  ITI    (Correlation)         . N       .                                  (1)  (1)  ,  ,     2L+1 N-1, N, N+1     .        N-1 N+1  N    .   N    ,   N        .   N-1 N+1           . ITI       .            (2)   , N-1    N   correlation metric  .                                      (3)

Performance Improvement Using Inter-track Interference Canceller for Shingled Magnetic Recording