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Multirate multicast is a powerful methodology of multimedia communication in heterogenous networks. A variant of multirate multicast motivated by scalable multimedia streaming is layered multicast, where the transmitted signal is presented in successive data layers. With recent advances of network coding theory, many layered multicast schemes using network(More)
H.264 SVC extension, as the state of art scalable video coding standard, can offer a single code stream to serve diverse communication bandwidths and display resolutions. However, the rate-distortion performance of H.264 SVC is still inferior to the non-scalable H.264 AVC. To reduce the performance gap between H.264 SVC and H.264 AVC, we propose a(More)
Rainbow network flow is a recent enquiry into rate-distortion optimized network flow of a multiple description (MD) coded source from multiple encoders to multiple sinks. This paper is a first attempt to combine network coding with rainbow network flow, and formulates a new problem called rainbow network coding (RNC). It is shown that performing linear(More)
Multirate multicast is a powerful methodology of multimedia communication in heterogenous networks. With recent advances of network coding theory, many multirate multicast techniques using network coding have been proposed and they hold promises of improving information multicast efficiency over the traditional application-layer multicast protocols.(More)
Large-scale storage systems used for scientific applications can store petabytes of data and billions of files, making the organization and management of data in these systems a difficult, time-consuming task. The ability to search file metadata in a storage system can address this problem by allowing scientists to quickly navigate experiment data and code(More)
Efficient delivery scheme for multimedia content is critical for the quality of various multimedia network services. It has been shown that the joint design of the source coding techniques and network communication strategies for multimedia streaming can outperform the traditional separate design in a rate-distortion measure. In this paper, we show that(More)
Localization information of individual nodes is crucial for many advanced functions including routing, querying in wireless sensor networks. Most of the existing localization algorithms in wireless sensor networks are designed for outdoor environment and few of them can get a reasonable localization precision in indoor environment. This paper presents a(More)
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