A study of test time reduction of FIR tap optimization with LMS algorithm in recording head testing process

Author

Boonserm, Kitiyaporn ; Sivaratana, Roong ; Pornpitakpong, Kridsada ; Supnithi, Pornchai

Author_Institution

Fac. of Eng., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok, Thailand

fYear

2009

fDate

6-9 May 2009

Firstpage

1159

Lastpage

1162

Abstract

In this paper, we propose the use of adaptive equalizer to reduce recording head test time by employing the least mean-squared (LMS) algorithm to adapt the filter coefficients to search for the optimal coefficients. The effects of signal-to-noise ratio (SNR), step size and resolution on the convergent time are investigated. The comparison between the conventional combinatorial-based method and the LMS method show that for current read channel specification, the proposed method requires test time less than 30% than the conventional approach depending on the initial deviation from the recommended coefficient values.

Keywords

FIR filters; adaptive equalisers; least mean squares methods; magnetic recording; FIR tap optimization; adaptive equalizer; current read channel specification; filter coefficients; least mean-squared algorithm; optimal coefficients searching; recording head testing process; signal-to-noise ratio; test time reduction; Adaptive equalizers; Adaptive filters; Bit error rate; Data engineering; Finite impulse response filter; Least squares approximation; Magnetic heads; Optimization methods; Registers; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2009. ECTI-CON 2009. 6th International Conference on

Conference_Location

Pattaya, Chonburi

Print_ISBN

978-1-4244-3387-2

Electronic_ISBN

978-1-4244-3388-9

Type

conf

DOI

10.1109/ECTICON.2009.5137250

Filename

5137250