Notification:
We are currently experiencing intermittent issues impacting performance. We apologize for the inconvenience.
By Topic

Impact of medium noise correlation on various partial response channels

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)
Zhu, Jian-Gang ; Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA ; Ye, Xiao‐Guang

This work investigates the impact of correlated medium noise at high recording densities to various advanced recording channels. Based on spin-stand measurements, noise spatial correlations of dibit transitions at small bit intervals is characterized as two statistically independent correlation modes: the coherent amplitude fluctuation of the dipulse and shift-in-unison of the entire dipulse waveform. In the density region where supralinear noise enhancement is relatively pronounced, the amplitude fluctuation mode dominates the noise spatial correlation. It is found that the correlated medium noise can degrade the performance of a (0, k) coded PR4-ML channel by 5-6 dB over white Gaussian noise. However, (1, k) coded EPR4 and EEPR4 channels are much more immune to the coherent amplitude fluctuation mode noise. It is concluded that in the supralinear noise region, (1, k) coded EPR4 and EEPR4 channels could have much improved performance over (0, k) coded PR4 channel in the medium noise dominated environment

Published in:

Magnetics, IEEE Transactions on  (Volume:31 ,  Issue: 6 )