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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.

Further White Paper Details
Publisher	University of California	File Format	PDF
Date Published	April 2007	Downloads	5
Format	White Papers
Topics	Wireless LAN, Multimedia, Mobile - Wireless Communications

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