Till Halbach and Thomas R. Fischer.
Channel Rate Allocation for Error-Robust Packet Transmission of
SNR-Scalable DPCM-Coded Video.
in Proc. International Symposium on Signal Processing and its Applications (ISSPA),
Paris (France),
July 2003
Abstract
An SNR-scalable hybrid video coding scheme with a quality constraint is
considered.
The encoded digital data are conveyed as packets over an error-prone
channel.
We derive a low-complexity algorithm which assigns the best code to each packet,
based on a limited set of codes, and accounting for channel conditions, code properties,
the data's importance, and inter-packet
dependencies.
A highly error-resilient transmission is hereby achieved, the image quality being
equal to approximately high- quality layer $SNR$ for a low error probability
(0.002).
The quality decrease with degrading channel conditions is only
moderate.
Keywords
Joint source channel coding, UEP, hybrid video coding, SNR scalability,
H.26L, Viterbi algorithm.
Till Halbach
Last modified: January 30, 2002
