A cross layer resource allocation scheme for secure image delivery in wireless sensor networks
IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
Distortion-Driven Video Streaming over Multihop Wireless Networks with Path Diversity
IEEE Transactions on Mobile Computing
Mitigating the impact of hardware defects on multimedia applications: a cross-layer approach
MM '08 Proceedings of the 16th ACM international conference on Multimedia
Cross network and layer approach for video transmission over the future internet
CFI '09 Proceedings of the 4th International Conference on Future Internet Technologies
A cross-layer framework for efficient streaming of H.264 video over IEEE 802.11 networks
Journal of Computer Systems, Networks, and Communications
IEEE Transactions on Wireless Communications
Cross-layer multirate interaction with distributed source coding in wireless sensor networks
IEEE Transactions on Wireless Communications
An effective cross layer-based video streaming algorithm over mobile ad hoc network
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
IEEE Transactions on Signal Processing
Mobile Networks and Applications
SpringSim '10 Proceedings of the 2010 Spring Simulation Multiconference
Adaptive Packetization for Conversational Video Service over IEEE 802.11 WLANs with Hidden Terminals
Wireless Personal Communications: An International Journal
Link quality analysis and measurement in wireless mesh networks
Ad Hoc Networks
The Journal of Supercomputing
Proceedings of the 8th International Conference on Ubiquitous Information Management and Communication
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Existing wireless networks provide dynamically varying resources with only limited support for the quality of service required by the bandwidth-intense, loss-tolerant and delay-sensitive multimedia applications. This variability of resources does not significantly impact delay insensitive data transmission (e.g., file transfers), but has considerable consequences for multimedia applications. Recently, the research focus has been to adapt existing algorithms and protocols at the lower layers of the protocol stack to better support multimedia transmission applications and conversely, to modify application layer solutions to cope with the varying wireless networks resources. In this paper, we show that significant improvements in wireless multimedia performance can be obtained by deploying a joint application-layer adaptive packetization and prioritized scheduling and MAC-layer retransmission strategy. We deploy a state-of-the-art wavelet coder for the compression of the video data that enables on-the-fly adaptation to changing channel conditions and inherent prioritization of the video bitstream. We pose the cross-layer problem as a distortion minimization given delay constraints and derive analytical solutions by modifying existing joint source-channel coding theory aimed at fulfilling rate, rather than delay, constraints. We also propose real-time algorithms that explicitly consider the available information about previously transmitted packets. The obtained results show significant improvements in terms of video quality as opposed to ad-hoc optimizations currently deployed, while the complexity associated with performing this optimization in real time, i.e., at transmission time, is limited