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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Conci, N. Scorza, G.B. Sacchi, C. |
| Copyright Year | 2005 |
| Description | Author affiliation: Dept. of Inf. & Commun. Technol., Trento Univ., Italy (Conci, N.; Scorza, G.B.; Sacchi, C.) |
| Abstract | In this work, a novel methodology for the efficient multiplexing and streaming of MPEG4 video over wireless networks is presented and discussed. The proposed cross-layer adaptation jointly exploits variable-bitrate (VBR) multi-carrier code-division multiplexing (MC-CDM) and MPEG4 fine-grain-scalability (FGS) in order to provide unequal error protection to the transmitted video stream. A shared bandwidth is partitioned into orthogonal sub-channels in order to multiplex different layers of MPEG4-coded signals. Lower layers are assigned a higher number of sub-channels (and hence an increased frequency diversity) as compared to FGS enhancement layers, in order to provide a differentiated protection against channel degradations. Results achieved in terms of PSNR show that the VBR MC-CDM technique can provide better results than conventional MPEG4 single-layer multicarrier spread spectrum transmission. |
| File Size | 147449 |
| File Format | |
| ISBN | 0780391349 |
| DOI | 10.1109/ICIP.2005.1529722 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2005-09-14 |
| Publisher Place | Italy |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | MPEG 4 Standard Streaming media Spread spectrum communication Error correction codes Video sharing Wireless networks Code division multiplexing Bandwidth Frequency diversity Protection Multicarrier modulation Video coding Unequal Error Protection Multimedia Communication |
| Content Type | Text |
| Resource Type | Article |
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