Determining a signal to noise ratio for an arbitrary data sequence by a time domain analysis

Author

Mian, Guo ; Howell, Thomas D.

Author_Institution

Quantum Corp., Milpitas, CA, USA

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3999

Lastpage

4001

Abstract

An algorithm is developed for determining the signal to noise (S/N) ratio for an arbitrary data sequence by a time domain correlation analysis. By measuring the correlation coefficient of time domain readback voltages, r[V(t), V (t+nT)], the S/N for an arbitrary data sequence can be determined. The authors applied this method to obtain the S/N ratio for a magnetic recording thin film medium written by a 127-b pseudorandom sequence at different linear recording densities. The new algorithm may also provide a simple way to integrate the S/N measurement into a digital oscilloscope

Keywords

correlation methods; magnetic recording; magnetic thin film devices; time-domain analysis; arbitrary data sequence; correlation analysis; correlation coefficient; linear recording densities; magnetic recording; pseudorandom sequence; readback voltages; signal to noise ratio; thin film medium; time domain analysis; Algorithm design and analysis; Magnetic films; Magnetic recording; Oscilloscopes; Random sequences; Signal analysis; Signal to noise ratio; Time domain analysis; Time measurement; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.281369

Filename

281369