Information from the abstract
This research presents a non-uniform track configuration in which the main track is twice as wide as its adjacent tracks, enabling high-quality soft information and enhancing adjacent-track detection via low-density parity-check (LDPC)-based turbo decoding. We then propose an iterative joint a priori probability (JAPP) detection method for turbo decoding in non-uniform track systems, in which highly-reliable information from the wider track is fed back to improve the reliability of adjacent track detection in the branch metric calculation step. Moreover, to maximize robustness against inter-track interference (ITI), the reader offset is also optimized to achieve a better bit-error rate (BER) performance. The simulation results demonstrate that non-uniform iterative JAPP configurations significantly outperform conventional uniform configurations, even at higher areal densities, achieving substantial BER improvements at an optimal reader offset of 20%.
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This record has an Impact Signal of 72/100 based on recency, source, collaboration, and bibliographic signals. It prioritizes monitoring and is not a judgment of research quality.
Related topics: Advanced Data Storage Technologies · Error Correcting Code Techniques · Advanced Wireless Communication Techniques
Thai researcher and institutional participation
Anawin Khamethong · Chanon Warisarn · Pornchai Supnithi · King Mongkut's Institute of Technology Ladkrabang
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