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Lattice quantizers: Entropy reduction by proper tie-handling (Corresp.)

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1 Author(s)

The entropy of a lattice quantizer can be lowered by breaking ties in rounding off in favor of the closest lattice point of highest probability. For a differential pulse-code modulation (DPCM) signal, this means rounding off toward the component of smallest norm. This variant of the algorithm of Conway and Sloane reduces entropy without sacrificing mean-square error.

Published in:

IEEE Transactions on Information Theory  (Volume:32 ,  Issue: 2 )