Adaptive partial response (PR) signaling for magneto-optic (MO) read channels in the presence of transition noise

Inci Ozgunes; Bhagavatula Vijaya Kumar

doi:10.1117/12.228218

8 December 1995 Adaptive partial response (PR) signaling for magneto-optic (MO) read channels in the presence of transition noise

Inci Ozgunes, Bhagavatula Vijaya Kumar

Author Affiliations +

Proceedings Volume 2605, Coding and Signal Processing for Information Storage; (1995) https://doi.org/10.1117/12.228218
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

Magneto-optic (MO) recording can benefit from partial response (PR) spectral shaping of the readback signal to achieve higher recording densities for similar reasons that PR signaling applies well to magnetic recording. We compare various PR equalization schemes by using the bit error rate (BER) as a means of comparison. We also compare the adaptive partial response maximum-likelihood (PRML) detection schemes in the presence of additive white Gaussian noise (AWGN) and transition noise. Our conclusions are for densities in the range of 50 - 60 kbpi, for disks with carrier-to-noise ratio (CNR) of 50 dB and optical system with full width at half maximum (FWHM) of 0.68 micrometer. We show results which indicate that PR1 equalized signals followed by the Viterbi algorithm have the best performance. They not only perform well in the absence of transition noise, but also do well in the presence of transition noise up to 12 ns.

Citation Download Citation

Inci Ozgunes and Bhagavatula Vijaya Kumar "Adaptive partial response (PR) signaling for magneto-optic (MO) read channels in the presence of transition noise", Proc. SPIE 2605, Coding and Signal Processing for Information Storage, (8 December 1995); https://doi.org/10.1117/12.228218

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available