Publication
IEEE Transactions on Communications
Paper

Reduced-State Sequence Detection of Multilevel Partial-Response Signals

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Abstract

This paper is concerned with the problem of designing reduced-complexity Viterbi decoders for the transmission of digital data over intersymbol-interference channels. First, optimal state-grouping for constructing reduced-state trellises is presented and illustrative examples are given for multilevel transmission over partial-response channels of the type 1 ±D″, (1+D)<sup>2</sup>, (1+D)<sup>2</sup>(l-D), and (1+D)<sup>3</sup>(1-D). Then, the quaternary 1 D type partial-response channel is considered in more detail and a difference-metric algorithm employing state-reduction is derived and shown to result in a simple decoding scheme. © 1992 IEEE

Date

01 Jan 1992

Publication

IEEE Transactions on Communications

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