Title :
Asymmetric multiple description lattice vector quantizers
Author :
Diggavi, Suhas N. ; Sloane, N. J A ; Vaishampayan, Vinay A.
Author_Institution :
AT&T Shannon Labs., Florham Park, NJ, USA
fDate :
1/1/2002 12:00:00 AM
Abstract :
We consider the design of asymmetric multiple description lattice quantizers that cover the entire spectrum of the distortion profile, ranging from symmetric or balanced to successively refinable. We present a solution to a labeling problem, which is an important part of the construction, along with a general design procedure. The high-rate asymptotic performance of the quantizer is also studied. We evaluate the rate-distortion performance of the quantizer and compare it to known information-theoretic bounds. The high-rate asymptotic analysis is compared to the performance of the quantizer
Keywords :
rate distortion theory; source coding; vector quantisation; VQ; asymmetric multiple description lattice quantizers; asymmetric multiple description lattice vector quantizers; balanced multiple description quantizers; distortion profile; general design procedure; hierarchical successive refinement quantizers; high-rate asymptotic performance; information-theoretic bounds; labeling problem solution; quantizer performance; rate-distortion performance; source coding; sublattices; symmetric multiple description quantizers; Bridges; Data compression; Decoding; IP networks; Labeling; Lattices; Performance analysis; Rate-distortion; Source coding; Vector quantization;
Journal_Title :
Information Theory, IEEE Transactions on