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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Tian, C. Hemami, S.S. |
| Copyright Year | 2004 |
| Description | Author affiliation: Sch. of Electr. & Comput. Eng., Cornell Univ., Ithaca, NY, USA (Tian, C.; Hemami, S.S.) |
| Abstract | This paper introduces a new sequential design method for multiple description scalar quantizers (MDSQs) to generate two or more balanced descriptions. In this design method, a multiple description system is divided into multiple stages, and the m-th stage can be understood intuitively as minimizing the distortion of receiving any m of all the descriptions, while looking ahead to the next stage to reduce the distortion if more descriptions are present. Entropy-constrained sequential MDSQ with two descriptions is shown to achieve the same asymptotic performance as entropy-constrained MDSQ with uniform stepsize. Then this method is applied to the design of sequential MDSQ with three descriptions, for which two slightly different designs are given and compared with a three description system based on unequal loss protection at high rate. The results suggest that if the quality of the decoded source with two or more descriptions (rather than a single description) is most important, general multiple description systems should be favored over unequal loss protection systems. However, if the quality of the decoded source with a single description is most important (in the case of, for example, high channel failure rates), the difference in their performances is not terribly large. |
| Sponsorship | Brandeis Univ |
| Starting Page | 32 |
| Ending Page | 41 |
| File Size | 492632 |
| Page Count | 10 |
| File Format | |
| ISBN | 0769520820 |
| ISSN | 10680314 |
| DOI | 10.1109/DCC.2004.1281448 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-03-23 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Protection Design methodology Decoding Distortion measurement Performance loss Chaos Design engineering Probability density function Density measurement Loss measurement |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Networks and Communications |
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