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In this paper we introduce a distributed channel change framework that utilizes a dedicated server and session peers to support the fast channel change process. Support peers represent the prior choice to deliver the channel change packets to the zapping users. The dedicated server, which we refer to as the Channel Switch Coordinator (CSC), is essentially responsible for the coordination of the channel...
To achieve the desired service quality in IPTV networks, we need effective and resource-efficient error recovery techniques to overcome the problems encountered during the delivery of the IPTV content to the end-users. To enable quick recovery from packet losses, one idea is to utilize an error recovery server (ERServ) that is placed in-between the end-users and the content delivery server. Within...
The prospect of delivering high-quality broadcast content over the Internet relies on the promise of presenting end-users with the minimum quality of viewing experience. Quality of Experience (QoE) represents the perceived performance at the end-users in terms of resource utilization, error control, and delivery latency. Among the considered performance measures, error control typically represents...
In a cooperative network, by combining multiple copies of the same packet that are received either simultaneously (i.e., same time-slot) or non-simultaneously (i.e., different time-slot), the aggregate power level of the cooperatively transmitting set, required to achieve reliable reception at the receiver node, can be considerably lowered. This approach is especially advantageous for networks, where...
Cooperative diversity techniques exploit the spatial characteristics of the network to create transmit-diversity, in which the same information can be forwarded through multiple paths towards a single destination or a set of destination nodes. In this paper, we study the integration of cooperative diversity into wireless routing protocols by developing distributed cooperative MAC (C-MAC) and routing...
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