Wireless LAN White Papers
Multimedia Communication Over OFDM Mobile Wireless Networks: A Cross-Layer Diversity Approach
Overview Diversity can be used to combat multipath fading and improve the performance of mobile wireless multimedia communication systems. In this work, by considering transmission of an embedded bitstream over a slow varying Rayleigh faded environment, the authors develop a cross-layer diversity technique which takes advantage of both multiple description source coding and frequency diversity techniques. More specifically, assuming a frequency-selective channel, this paper studies the packet loss behavior of an OFDM system and constructs multiple independent descriptions using an FEC-based strategy. The paper demonstrates the superior performance of this approach using the Set Partitioning In Hierarchical Trees (SPIHT) coder.
| Publisher | University of California | File Format | |
|---|---|---|---|
| Date Published | April 2007 | Downloads | 5 |
| Format | White Papers | ||
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