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We consider data-streaming from an access point to multiple receivers, which is modeled as packet erasure channel. A simple network coding is shown to achieve larger rate region than without network coding, using minimal control information. The performance is characterized exactly using state transition graph. The scheme is then mapped to an information theoretic formulation for broadcast channel...
This paper describes a methodology for building a reliable internet core router that considers the vulnerability of its electronic components to single event upset (SEU). It begins with a set of meaningful system level metrics that can be related to product reliability requirements. A specification is then defined that can be effectively used during the system architecture, silicon and software design...
In this paper, the soft decision decoding method using CSI (channel state information) for DCM that is used for high data rate (320, 400, 480 Mbps) in MB-OFDM (multi-band orthogonal frequency division multiplexing) system is investigated. OFDM based on UWB system has been proposed by the MBOA to provide very high data rate wireless communication. And CSI can be used in the soft-decision process to...
Application-layer multicast (ALM), sometimes called overlay multicast, can help circumvent the limitations in IP multicast and unicast. In this article, we discuss and compare different recovery mechanisms in ALM. The major challenge in loss recovery is how to achieve low residual loss rate with low recovery overhead. As discussed, a promising approach might be a combination of proactive and reactive...
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