| Publisher | University of Trento | ||
|---|---|---|---|
| Format | 1.0MB PDF | Date added | 01 Nov 2005 |
| Topics | TDMA - CDMA, Mobile - Wireless Communications | ||
| Downloads | 103 | ||
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.
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