Novel soft-feedback equalization method for multilevel magnetic recording
Conference paper
Shah, P., Ahmed, M., Ambroze, M., Tjhai, C. and Davey, P.J. 2007. Novel soft-feedback equalization method for multilevel magnetic recording. Tenth joint Magnetism and Magnetic Materials - International Magentics (MMM–INTERMAG) conference. Baltimore, Maryland, USA 07 - 11 Jan 2007 IEEE. https://doi.org/10.1109/TMAG.2007.894010
Type | Conference paper |
---|---|
Title | Novel soft-feedback equalization method for multilevel magnetic recording |
Authors | Shah, P., Ahmed, M., Ambroze, M., Tjhai, C. and Davey, P.J. |
Abstract | This paper investigates the use of multilevel modulation for magnetic recording using a novel soft-feedback equalization (SFE) approach. Different aspects of investigation are 1)multilevel recording, 2) SFE, and 3) application of turbo codes. The SFE scheme is a model in which the partial response (PR) equalizer and maximum a posteriori (MAP) decoder are replaced by a linear filter with an iterative MAP decoder. Error correction codes (ECCs) are applied to the multilevel recording system in order to achieve very low error rates. Implementation of the SFE scheme for multilevel recording shows a reduction in complexity in comparison to various PRML schemes. The simulation results show a clear performance gain of multi-level-coded against binary-coded recording systems. At higher signal-to-noise ratio (SNR), the coded multilevel SFE scheme overcomes the error floor effect produced in the coded multilevel PRML scheme, which is caused by minimum distance error events. Overall, this paper proposes the use of coded multilevel recording with SFE scheme at lower rates rather than coded binary recording at higher densities in order to achieve similar performance |
Keywords | error correction codes (ECCs); longitudinal recording; magnetic recording; multilevel; maximum a posteriori (MAP); noise coloration; PRML; soft feedback equalization (SFE) |
Research Group | SensoLab group |
Conference | Tenth joint Magnetism and Magnetic Materials - International Magentics (MMM–INTERMAG) conference |
Proceedings Title | IEEE Transactions on Magnetics |
ISSN | 0018-9464 |
Electronic | 1941-0069 |
Publisher | IEEE |
Publication dates | |
Online | 21 May 2007 |
Jun 2007 | |
Publication process dates | |
Deposited | 03 May 2011 |
Output status | Published |
Copyright Statement | Post refereed version as permitted by publisher. |
Digital Object Identifier (DOI) | https://doi.org/10.1109/TMAG.2007.894010 |
Scopus EID | 2-s2.0-34249101839 |
Web of Science identifier | WOS:000246706200066 |
Web address (URL) of conference proceedings | https://ieeexplore.ieee.org/xpl/tocresult.jsp?isnumber=4202640&punumber=20 |
Related Output | |
Has metadata | http://www.scopus.com/inward/record.url?eid=2-s2.0-34249101839&partnerID=MN8TOARS |
Language | English |
File |
https://repository.mdx.ac.uk/item/83507
Download files
58
total views14
total downloads0
views this month1
downloads this month