A CMOS two-path tree search detector

Author

Wang, Xiaodong ; Spencer, Richard R.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA

Volume

35

Issue

6

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

816

Lastpage

825

Abstract

Two-path tree search (TPTS) is a detection algorithm combining a decision-feedback equalizer and a two-path tree search estimator. This sub-optimal tree search overcomes the exponential increase in hardware complexity with tree length in a fixed-delay tree search structure. An adaptive mixed-signal CMOS TPTS detector is presented in this paper. The integrated circuit occupies 2.77 mm by 2.44 mm (including the bonding pads) in a 0.6 /spl mu/m CMOS process. It performs about 0.8 dB better than a conventional decision-feedback equalization for a disk drive read channel.

Keywords

CMOS integrated circuits; decision feedback equalisers; detector circuits; disc drives; mixed analogue-digital integrated circuits; tree searching; 0.6 micron; CMOS; adaptive mixed-signal IC; decision-feedback equalizer; detection algorithm; disk drive read channel; fixed-delay tree search structure; hardware complexity; sub-optimal tree search; two-path tree search detector; Bit error rate; Decision feedback equalizers; Detection algorithms; Detectors; Disk drives; Finite impulse response filter; Intersymbol interference; Maximum likelihood detection; Maximum likelihood estimation; Signal to noise ratio;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.845185

Filename

845185