Layered Low-Density Generator Matrix Codes for Super High Definition Scalable Video Coding System
| Autor: | Takayuki Nakachi, Fujii Tatsuya, Daisuke Shirai, Hitoshi Kiya, Yoshihide Tonomura |
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| Rok vydání: | 2009 |
| Předmět: |
Block code
Theoretical computer science Computer science Applied Mathematics Concatenated error correction code Serial concatenated convolutional codes Computer Graphics and Computer-Aided Design Linear code Scalable Video Coding Computer engineering Signal Processing Turbo code Forward error correction Electrical and Electronic Engineering Low-density parity-check code |
| Zdroj: | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :798-807 |
| ISSN: | 1745-1337 0916-8508 |
| DOI: | 10.1587/transfun.e92.a.798 |
| Popis: | In this paper, we introduce layered low-density generator matrix (Layered-LDGM) codes for super high definition (SHD) scalable video systems. The layered-LDGM codes maintain the correspondence relationship of each layer from the encoder side to the decoder side. This resulting structure supports partial decoding. Furthermore, the proposed layered-LDGM codes create highly efficient forward error correcting (FEC) data by considering the relationship between each scalable component. Therefore, the proposed layered-LDGM codes raise the probability of restoring the important components. Simulations show that the proposed layered-LDGM codes offer better error resiliency than the existing method which creates FEC data for each scalable component independently. The proposed layered-LDGM codes support partial decoding and raise the probability of restoring the base component. These characteristics are very suitable for scalable video coding systems. |
| Databáze: | OpenAIRE |
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