A Combination Approach for 2-D Interference Channel Based on Factor Graph in BPMR System

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Published: Feb 28, 2025
DOI: https://doi.org/10.37936/ecti-eec.2525231.254399
Keywords:
Information storage, bit patterned media recording, 2-D interference channel, factor graph based detector

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Thanomsak Sopon
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Pornchai Supnithi
School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand

Abstract

High areal density in bit patterned media recording (BPMR) system encounters several challenges such as two-dimensional (2-D) interference channel and media noises in the presence of severe fluctuations. To combat the effects of the 2-D interference channel, a factor graph-based detector (FGB) is one of the promising detectors for the 2-D detection which can mitigate the channel impairment. In this paper, we propose an improvement of factor graph decoding for 2-D interference channels of BPMR system. The 2-D interference channel is separated into the two targets that are an upper triangular target and the lower triangular target. After that, the joint outputs are averaged of each detector. The simulation results show that the proposed FGB detector method achieves lower the bit error rate (BER) performances than both the conventional FGB detector and 2-D FGB detector on BPMR system with an areal density of 3 and 4 Tb/in2.

Article Details

How to Cite
Sopon, T., & Supnithi, P. (2025). A Combination Approach for 2-D Interference Channel Based on Factor Graph in BPMR System. ECTI Transactions on Electrical Engineering, Electronics, and Communications, 23(1). https://doi.org/10.37936/ecti-eec.2525231.254399
Issue
Vol. 23 No. 1 (2025): Regular Issue (February 2025)
Section
Communication Systems
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