Sensitivity of PRML systems to timing offsets

Author

Weathers, Anthony D.

Author_Institution

Overland Data Inc., San Diego, CA, USA

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

3971

Lastpage

3973

Abstract

An effective distance measure based on the state metrics of a Viterbi algorithm detector (VAD) is defined and used to estimate the sensitivity of a VAD to constant timing offset. It is shown that the statistics of this measure contain sufficient information to estimate the performance of a maximum likelihood sequence detector with additive white Gaussian noise. The statistics are used to determine the timing windows for various binary and ternary partial response systems. Additionally, it is shown that the statistics can be used to generate probability of error versus SNR curves for various timing offset values

Keywords

Gaussian noise; Viterbi detection; error statistics; estimation theory; maximum likelihood detection; probability; white noise; PRML system; SNR curves; Viterbi algorithm detector; additive white Gaussian noise; binary response systems; constant timing offset; distance measure; maximum likelihood sequence detector; probability of error; state metrics; statistics; ternary partial response systems; timing offset values; timing offsets; timing windows; Additive white noise; Detectors; Error analysis; Maximum likelihood detection; Maximum likelihood estimation; Noise measurement; State estimation; Statistics; Timing; Viterbi algorithm;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539234

Filename

539234