Title :
Sensitivity of PRML systems to timing offsets
Author :
Weathers, Anthony D.
Author_Institution :
Overland Data Inc., San Diego, CA, USA
fDate :
9/1/1996 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
