Título: Combining Modulation Diversity and Index Assignment to Improve Image VQ for a Rayleigh Fading Channel
Autores: Lopes, Waslon Terllizzie A.; Madeiro, Francisco; Aguiar Neto, Benedito G.; Alencar, Marcelo S.
Resumo: Vector quantization (VQ) has been widely used in image coding systems. However, it is highly sensitive to channel errors, which may lead to very annoying blocking artifacts in the reconstructed images. In the present paper, modulation diversity (MD) is combined with index assignment (IA) by simulated annealing for improving image VQ for a Rayleigh fading channel: MD is used to reduce the bit error probability while IA is used as an attempt to reduce the visual impact of channel errors.
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Páginas: 6
Código DOI: 10.21528/CBRN2003-013
Artigo em PDF: 6CBRN_013.PDF
Arquivo BibTex: 6CBRN_013.bib