Noise-predictive turbo equalization for partial-response channels

Author

Aviran, S. ; Siegel, P.H. ; Wolf, J.K.

Author_Institution

Dept. of CMRR & ECE, UCSD, La Jolla, CA, USA

fYear

2005

fDate

4-8 April 2005

Firstpage

981

Lastpage

982

Abstract

We consider an iterative decoding and detection system for magnetic recording channels. The system uses a zero-forcing equalizer to shape the channel response to a target polynomial, called a partial-response (PR) polynomial. We assume that the noise at the input to the equalizer is AWGN. Hence, noise enhancement and coloration occur at the output of the equalizer. In this work, the paper aims to improve the system performance by incorporating noise prediction. The approach has previously been used to improve Viterbi detectors in PRML systems.

Keywords

AWGN channels; Viterbi detection; equalisers; iterative decoding; magnetic recording; parity check codes; partial response channels; turbo codes; AWGN; Viterbi detectors; iterative decoding; iterative detection system; magnetic recording channels; noise-predictive turbo equalization; partial-response channels; partial-response polynomial; zero-forcing equalizer; AWGN; Additive white noise; Colored noise; Equalizers; Gaussian noise; Iterative decoding; Magnetic noise; Magnetic recording; Noise shaping; Polynomials;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Print_ISBN

0-7803-9009-1

Type

conf

DOI

10.1109/INTMAG.2005.1463919

Filename

1463919