Partial reverse concatenation for data storage
Roy D. Cideciyan, Robert Hutchins, et al.
APSIPA 2014
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)2, (1+D)2(l-D), and (1+D)3(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
Roy D. Cideciyan, Robert Hutchins, et al.
APSIPA 2014
Roy D. Cideciyan, Sedat Ölçer
IEEE Trans. Inf. Theory
Giovanni Cherubini, Roy D. Cideciyan, et al.
IEEE Transactions on Magnetics
Sedat Ölçer, Gottfried Ungerboeck
IEEE Transactions on Communications