Channel-Matched Hierarchical Table-Lookup Vector Quantization for Transmission of Video over Wireless Channels.

摘要

The authors propose a channel-matched hierarchical table-lookup vector quantizer (CM-HTVQ) which provides some robustness against the channel noise. They use a finite-state channel to model slow fading channels and propose an adaptive coding scheme to transmit a source over wireless channels. The performance of CM-HTVQ is in general slightly inferior to that of channel- optimized vector quantizer (COVQ) (the performances coincide in some cases); however, the encoder complexity of CM-HTVQ is much less than the encoder complexity of COVQ.