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Lattice and trellis-coded quantization

  • US 5,297,170 A
  • Filed: 08/21/1990
  • Issued: 03/22/1994
  • Est. Priority Date: 08/21/1990
  • Status: Expired due to Term
First Claim
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1. Apparatus for quantizing signal vectors whose components represent signal samples, comprisingmeans for providing a codebook having codewords based on a coset code, and which lie inside a boundary region which is based on another coset code, said boundary region being other than an N-cube and other than the Voronoi region of a sublattice Λ

  • b =MΛ

    g of a lattice Λ

    g upon which said codewords may have been based, M being a scaling factor, andmeans for selecting codewords from said codebook as quantized values representing said signal vectors.

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