Math @ Duke

Publications [#236015] of Robert Calderbank
Papers Published
 Calderbank, AR; Sloane, NJA, NEW TRELLIS CODES BASED ON LATTICES AND COSETS.,
IEEE Transactions on Information Theory, vol. IT33 no. 2
(1987),
pp. 177195
(last updated on 2017/12/14)
Abstract: A new technique is proposed for constructing trellis codes, which provides an alternative to Ungerboeck's method of set partitioning. The new codes use a signal constellation consisting of points from an ndimensional lattice LAMBDA , with an equal number of points from each coset of a sublattice LAMBDA '. One part of the input stream drives a generalized convolutional code whose outputs are cosets of LAMBDA ', while the other part selects points from these cosets. Several of the new codes are better than those previously known.


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