Concentric Permutation Source Codes
Author(s)Nguyen, Ha Q.; Varshney, Lav Raj; Goyal, Vivek K.
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Permutation codes are a class of structured vector quantizers with a computationally-simple encoding procedure based on sorting the scalar components. Using a codebook comprising several permutation codes as subcodes preserves the simplicity of encoding while increasing the number of rate-distortion operating points, improving the convex hull of operating points, and increasing design complexity. We show that when the subcodes are designed with the same composition, optimization of the codebook reduces to a lower-dimensional vector quantizer design within a single cone. Heuristics for reducing design complexity are presented, including an optimization of the rate allocation in a shape-gain vector quantizer with gain-dependent wrapped spherical shape codebook.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Research Laboratory of Electronics
IEEE Transactions on Communications
Institute of Electrical and Electronics Engineers
Nguyen, Ha Q., Lav R. Varshney, and Vivek K Goyal. “Concentric Permutation Source Codes.” IEEE Transactions on Communications 58.11 (2010): 3154–3164. Web.© 2010 IEEE.
Final published version
INSPEC Accession Number: 11638731