Abstract
Distributed source coding (DSC) is a coding paradigm
for systems which fully or partly exploit the source statistics
at the decoder to reduce the computational burden at
the encoder. Distributed video coding (DVC) is one example.
This paper considers the use of Low Density Parity
Check Accumulate (LDPCA) codes in a DSC scheme
with feed-back. To improve the LDPC coding performance
in the context of DSC and DVC, while retaining
short encoder blocks, this paper proposes multiple parallel
LDPC decoding. The proposed scheme passes soft information
between decoders to enhance performance.
Experimental results on DVC show that the LDPCA perfomance
implies a loss compared to the conditional entropy,
but also that the proposed scheme reduces the
DVC bit rate up to 3.9% and improves the rate-distortion
(RD) performance of a Transform Domain Wyner-Ziv
(TDWZ) video codec.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of WITMSE 2011 |
| Publication date | 2011 |
| Publication status | Published - 2011 |
| Event | 4th Workshop on Information Theoretic Methods in Science and Engineering - University of Helsinki, Helsinki, Finland Duration: 7 Aug 2011 → 10 Aug 2011 Conference number: 4 http://www.helsinki.fi/witmse2011/ |
Workshop
| Workshop | 4th Workshop on Information Theoretic Methods in Science and Engineering |
|---|---|
| Number | 4 |
| Location | University of Helsinki |
| Country/Territory | Finland |
| City | Helsinki |
| Period | 07/08/2011 → 10/08/2011 |
| Internet address |