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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Viswanatha, K. Akyol, E. Rose, K. |
| Copyright Year | 2013 |
| Description | Author affiliation: ECE Dept., Univ. of California, Santa Barbara, Santa Barbara, CA, USA (Viswanatha, K.; Akyol, E.; Rose, K.) |
| Abstract | This paper focuses on the problem of L-channel quadratic Gaussian multiple description (MD) coding. We recently introduced a new encoding scheme in [1] for general L-channel MD problem, based on a technique called `Combinatorial Message Sharing' (CMS), where every subset of the descriptions shares a distinct common message. The new achievable region subsumes the most well known region for the general problem, due to Venkataramani, Kramer and Goyal (VKG) [2]. Moreover, we showed in [3] that the new scheme provides a strict improvement of the achievable region for any source and distortion measures for which some 2-description subset is such that the Zhang and Berger (ZB) scheme achieves points outside the El-Gamal and Cover (EC) region. In this paper, we show a more surprising result: CMS outperforms VKG for a general class of sources and distortion measures, which includes scenarios where for all 2-description subsets, the ZB and EC regions coincide. In particular, we show that CMS strictly extends VKG region, for the L-channel quadratic Gaussian MD problem for all L ≥ 3, despite the fact that the EC region is complete for the corresponding 2-descriptions problem. Using the encoding principles derived, we show that the CMS scheme achieves the complete rate-distortion region for several asymmetric cross-sections of the L-channel quadratic Gaussian MD problem, which have not been considered earlier. |
| Starting Page | 1367 |
| Ending Page | 1371 |
| File Size | 149879 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781479904464 |
| ISSN | 21578117 |
| DOI | 10.1109/ISIT.2013.6620450 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-07-07 |
| Publisher Place | Turkey |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Encoding Joints Random variables Distortion measurement Decoding Rate-distortion Quadratic Gaussian multiple descriptions Multiple description coding Combinatorial message sharing |
| Content Type | Text |
| Resource Type | Article |
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