Open AccessDesign of an advanced soft‐output Viterbi algorithm detector for bit‐patterned media recording systems
Author(s) -
Nguyen Chi Dinh
Publication year - 2020
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2020.0245
Subject(s) - patterned media , computer science , viterbi algorithm , detector , soft output viterbi algorithm , viterbi decoder , channel (broadcasting) , algorithm , noise (video) , interference (communication) , bit error rate , signal (programming language) , signal to noise ratio (imaging) , decoding methods , electronic engineering , real time computing , telecommunications , artificial intelligence , head (geology) , geomorphology , sequential decoding , engineering , image (mathematics) , programming language , geology , block code
An advanced soft‐output Viterbi algorithm detector aided by extrinsic information resources is proposed for bit‐patterned media recording (BPMR) systems. These BPMR systems offer significant advantages over conventional magnetic recording systems. However, the performance system is significantly affected by a two‐dimensional interference. The proposed method improves the channel detection output under the assistance of a variety of extrinsic information sources. Especially, combining the proposed model with an adaptive scheme for extrinsic information to enhance system performance is examined. Furthermore, evaluating the worth of extrinsic information in the different signal‐to‐noise ratio (SNR) conditions is also considered in this work. The results show that the SNR gains from the proposed model are about 4 dB compared to conventional solutions at non‐misregistration.