Joint codebook design for summation product-code vector quantizers
- 31 December 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
With respect to the generalized product code (GPC) model for structured vector quantization, multistage VQ (MSVQ) and tree-structured VQ are members of a family of summation product codes (SPCs), defined by the prototypical synthesis function x=f 1 +···+f s , where f i , i=1, . . ., s are the residual vector features. The authors describe an algorithm paradigm for the joint design of the feature codebooks constituting a GPC. They specialize the paradigm to a joint design algorithm for the SPCs and exhibit experimental results for the MSVQ of simulated sources. The performance improvements over conventional `greedy' design are essentially `free' as the only cost is a moderate increase in design complexity Author(s) Wai-Yip Chan Dept. of Electr. Eng., McGill Univ., Montreal, Que., Canada Gersho, A. ; Soong, S.-W.Keywords
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