Título: Combining modulation diversity and index assignment to improve image VQ for a rayleigh fading channel
Autores: Lopes, Waslon Terllizzie Araújo; Madeiro, Francisco; Aguiar Neto, Benedito Guimarães; Alencar, Marcelo Sampaio de
Resumo: Vector quantization (VQ) has been widely used in many 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 the transmission of vector quantized images over a Rayleigh fading channel: MD is used to reduce the bit error rate while IA is used as an attempt to reduce the visual impact of channel errors.
Palavras-chave: Modulation diversity; Rayleigh fading channel; vector quantization; index assignment; simulated annealing; image transmission
Páginas: 12
Código DOI: 10.21528/lmln-vol2-no1-art3
Artigo em PDF: vol2-no1-art3.pdf
Arquivo BibTex: vol2-no1-art3.bib