Lattice and trellis-coded quantization

Details Lattice and trellis-coded quantization Lattice and trellis-coded quantization

1990-08-21

1994-03-22

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

375122, H04B 1404

Patent

active

052971708

ABSTRACT:
Vectors are quantized by representing the vectors by quantized values using a codebook having granular regions which are based on a coset code, and which lie inside a boundary region which is based on another coset code, the boundary region being other than an N-cube and other than the Voronoi region of a sublattice .LAMBDA..sub.b =M.LAMBDA..sub.g of a lattic .LAMBDA..sub.g upon which the granular regions may have been based.

REFERENCES:
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patent: 4910608 (1990-03-01), Whiteman et al.
patent: 4959842 (1990-09-01), Forney et al.
patent: 4975956 (1990-12-01), Liu et al.
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Buzo et al., "Speech Coding Based Upon Vector Quantization", IEEE Trans. ASSP, 1980.
Juang and Gray., "Multiple-Stage Vector Quantization for Speech Coding", Proc. of ICASSP, 1982.
Roucas, Schwartz and Makoul, "Segment Quantization for Very Low-Rate Speech Coding", Proc. ICASSP, 1982.
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Fischer, "A Pyramid Vector Quantizer", IEEE Trans. Inform. Theory, 1986.
Marcellin and Fischer, "Trellis-Coded Quantization of Memoryless and Gauss-Markov Sources", IEEE Trans. on Commun., 1990.
Forney and Wei., "Multi-dimensional Constellations--Part I: Introduction, Figures of Merit, and Generalized Cross Constellation", IEEE JSAC, 1989.
Forney, "Multi-dimensional Constellations--Part II: Voronoi Constellations", IEEE JSAC, 1989.
Forney et al., "Efficient Modulation for Band-Limited Channels", JSAC 1984.

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