Title :
Magneto-optic read channel modeling in the presence of bloom
Author :
Ozgunes, Inci ; Kumar, B. V K Vijaya
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
11/1/1994 12:00:00 AM
Abstract :
Bloom, the thermal expansion or contraction of the written domains, is present in magneto-optic (MO) recording. With high density MO recording, bloom and intersymbol interference (ISI) become problems. To study the effect of bloom on the soft bit error rate (BER), we modeled the MO channel in the presence of bloom. Our study indicates that while the signal-to-noise ratios (SNRs) of both PWM and PPM degrade about the same amount In the presence of bloom, overall performance of PWM is better than PPM
Keywords :
intersymbol interference; magnetic domains; magneto-optical recording; magnetocaloric effects; thermal expansion; bloom; intersymbol interference; magneto-optic read channel modeling; magneto-optic recording; signal-to-noise ratios; soft bit error rate; thermal expansion; written domains; Additive noise; Bit error rate; Decision feedback equalizers; Intersymbol interference; Laser noise; Magnetooptic effects; Magnetooptic recording; Optical noise; Pulse width modulation; Signal to noise ratio;
Journal_Title :
Magnetics, IEEE Transactions on
