Effect of the Multiple Description Coding over a Hybrid Fixed-AdHoc Video Distribution Network
FMN '09 Proceedings of the 2nd International Workshop on Future Multimedia Networking
Mitigating selective forwarding attacks with a channel-aware approach in WMNs
IEEE Transactions on Wireless Communications
Accurate simulation of 802.11 indoor links: a “bursty” channel model based on real measurements
EURASIP Journal on Wireless Communications and Networking - Special issue on simulators and experimental testbeds design and development for wireless networks
Modeling adaptive rate video transmission in Wi-Fi MANET
Proceedings of the 7th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
Replication of the bursty behavior of indoor WLAN channels
Proceedings of the 6th International ICST Conference on Simulation Tools and Techniques
Discrete-time Markov Model for Wireless Link Burstiness Simulations
Wireless Personal Communications: An International Journal
Multimedia Tools and Applications
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Providing real-time voice support over multihop ad hoc wireless networks is a challenging task. To make a voice application feasible over ad hoc wireless networks, the perceived voice quality must be improved while not significantly increasing the packet overhead. We suggest packet-level media-dependent adaptive forward error correction (FEC) at the application layer in tandem with multipath transport for improving the voice quality. Since adaptive FEC masks packet losses in the network, at the medium access control (MAC) layer, we avoid retransmissions in order to reduce the control overhead and end-to-end delay. Further, we exploit the combined strengths of layered coding and multiple description (MD) coding for supporting error resilient voice communication in ad hoc wireless networks. We propose an efficient packetization scheme in which the important sub-stream of the voice stream is protected adaptively with FEC depending on the loss rate present in the network and is transmitted over two maximally node-disjoint paths. Our scheme achieves significant gains in terms of reduced frame loss rate, reduced control overhead, and minimum end-to-end delay and almost doubles the perceived voice quality compared to the existing approaches.