An Analytical Approach for Performance Evaluation of Bit-Patterned Media Channels

In this work, a new analytical approach is used to evaluate the error performance of bit-patterned media (BPM) magnetic recording channels that employ one-dimensional (1D) and two-dimensional (2D) generalized partial response (GPR) equalizers to combat the significant inter-track interference (ITI)...

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Bibliographic Details
Published in:IEEE journal on selected areas in communications 2010-02, Vol.28 (2), p.135-142
Main Authors: Nabavi, S., Jeon, S., Kumar, B.V.K.V.
Format: Article
Language:English
Subjects:
Bit error rate
bit-patterned media
Channels
Detectors
Equalizers
Error analysis
Estimates
Ground penetrating radar
inter-track interference
Intersymbol interference
Magnetic analysis
Magnetic recording
Mathematical analysis
Mathematical models
Media
Performance analysis
Performance evaluation
Probability density function
Probability density functions
Studies
Viterbi algorithm
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Summary:In this work, a new analytical approach is used to evaluate the error performance of bit-patterned media (BPM) magnetic recording channels that employ one-dimensional (1D) and two-dimensional (2D) generalized partial response (GPR) equalizers to combat the significant inter-track interference (ITI) expected in BPM magnetic recording systems. The probability density function of ITI is obtained analytically and is used to estimate the bit error rate (BER) from the Viterbi detector. The proposed method takes into account most of the important factors affecting the BER such as ITI, un-equalized intersymbol interference (ISI), colored noise and the distance and the multiplicity of error events. In this work, it is shown that for 1D channels, modeling ITI and un-equalized ISI by Gaussian PDFs leads to inaccurate BERs and that the non-Gaussian distribution of the ITI and un-equalized ISI must be taken into account for more accurate BER estimates. This method provides fast and accurate estimates of BERs for moderate to high signal-to-noise ratios (SNRs). By using this analytical method, time-consuming numerical simulations for error performance evaluation can be avoided.
ISSN:0733-8716
1558-0008
DOI:10.1109/JSAC.2010.100202