Modified 2D Viterbi Algorithm using 2D Modulation Encoding Constraints in BPMR Systems

Sokjabok, Siwakon; Warisarn, Chanon; Koonkarnkhai, Santi; Lee, Jaejin

doi:10.1109/ecti-con49241.2020.9158255

Cited by 4 publications

(1 citation statement)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To avoid the patterns causing 2D interference, a rate-8/9 2-D modulation code was designed by Kovintavewat, Arayangkool, and Warisarn [9]. To combat 2D interference, a modified 2D Viterbi algorithm (VA) using 2D modulation-encoding constraints was proposed by Sokjabok, Warisarn, Koonkarnkhai, and Lee [10]. For the structure of a staggered BPMR, an error-correcting 5/6 modulation code was introduced by Nguyen and Lee [11], which helps to correct errors and reduce isolated patterns in the staggered BPMR.…”

Section: Introductionmentioning

confidence: 99%

Estimating Interference with a Two-Dimensional Viterbi Algorithm for Bit-Patterned Media Recording

Nguyen

Lee

2022

Applied Sciences

Self Cite

View full text Add to dashboard Cite

Bit-patterned media recording (BPMR) is proposed as a candidate for future magnetic data storage to overcome superparamagnetism. The distance between magnetic islands in BPMR must be reduced to increase the areal density (AD). As magnetic islands become closer, two-dimensional (2D) interference is increased, including intersymbol interference (ISI) based on the down-track direction and intertrack interference (ITI) from the cross-track direction. We propose an estimator to predict interference from neighboring (upper and lower) tracks. This estimator exploits the 2D Viterbi algorithm (VA) with reduced states. We removed the interference from the neighboring track and applied a simple 1D VA to detect the received signal. The simulation results show that our model performs better than previously proposed models.

show abstract

Section: Introductionmentioning

confidence: 99%