A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf
.
Combining modulation diversity and index assignment to improve image VQ for a rayleigh fading channel
2004
Learning and Nonlinear Models
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.
doi:10.21528/lnlm-vol2-no1-art3
fatcat:sukmyki3rjhavouug6tclfcdmi