By Topic

Evaluation of Low-Density Parity-Check Codes on Perpendicular Magnetic Recording Model

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Xinde Hu ; Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA ; Kumar, B.V.K.V.

Low-density parity-check (LDPC) codes have shown superior error-correcting performance in a variety of data storage system studies, including traditional longitudinal magnetic recording systems. However, perpendicular magnetic recording systems (of increasing interest) exhibit impairments different from longitudinal magnetic recording systems, and thus present new challenges for error-correcting codes. In this effort, we evaluate a structured LDPC code using a perpendicular magnetic recording channel model that includes impairments such as transition noise, nonlinear transition shift, transition percolation, and baseline wander (BLW). The channel model, as well as the LDPC encoder and the decoder are implemented in field-programmable gate array (FPGA) hardware. The LDPC coded system is evaluated down to bit error rate (BER) of 10-12 and frame error rate (FER) of 10-8. The impact of individual impairments on coding performance is studied separately. The soft output Viterbi algorithm (SOVA) + LDPC system maintains its superior error-correcting performance under the perpendicular recording channel

Published in:

Magnetics, IEEE Transactions on  (Volume:43 ,  Issue: 2 )