Sciweavers

DCC
2009
IEEE

Multi Level Multiple Descriptions

14 years 4 months ago
Multi Level Multiple Descriptions
Multiple Description (MD) source coding is a method to overcome unexpected information loss in a diversity system such as the internet, or a wireless network. While classic MD coding handles the situation where the rate in some channels drops to zero temporarily, thus causing unexpected packet-loss, it fails to accommodate more subtle changes in link rate such as rate reduction. In such a case, a classic scheme can not use the link capacity left for information transfer, causing even minor rate reduction to be considered as link failure. In order to accommodate such a frequent situation, we propose a more modular design for transmitting over a diversity system, which can handle unexpected reduction in link's rate, by downgrading the original description into a more coarse description, so it would fit to the new link's rate. The method is analyzed theoretically, and performance results are presented.
Tal A. Beery, Ram Zamir
Added 24 Nov 2009
Updated 24 Nov 2009
Type Conference
Year 2009
Where DCC
Authors Tal A. Beery, Ram Zamir
Comments (0)