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1. Introduction Video traffic is exponentially increasing over wireless networks due to proliferating video technology and the growing desire for anytime, anywhere access to video content. Cisco predicts that two-thirds of the world's mobile data traffic will be video by 2017 [1]. This imposes significant challenges for managing video traffic efficiently to(More)
Providing reliable end-to-end video communications over wireless ad-hoc networks is a challenging problem due to the highly dynamic topology of the ad-hoc networks and the unreliable wireless channels. Multiple description coding (MDC) with path diversity is often proposed to maintain connectivity but the challenge is to match the chosen MDC method with an(More)
Video communications over wireless networks suffers various patterns of losses, including burst losses that cause great degradation in video quality. In this paper, we propose an algorithm based on recursive optimal per-pixel estimate (ROPE) to accurately estimate the overall distortion accounting for the loss pattern. The estimated distortion is applied to(More)
Supporting video transmission over error-prone mobile ad-hoc networks is becoming increasingly important as these networks become more widely deployed. We propose a routingaware multiple description video coding approach to support video transmission over mobile ad-hoc networks with multiple path transport. We build a statistical model to estimate the(More)
Supporting video transmission over error-prone wireless ad-hoc networks is becoming increasingly important as these networks become more widely deployed. In this paper, we propose a routing-aware multiple description video coding approach to support video transmission over wireless ad-hoc networks with path diversity. Our method uses the standard ad-hoc(More)
This paper proposes a cross-layer approach called routing-aware multiple description coding with multipath transport to support video communications over mobile ad-hoc networks. This approach establishes a packet loss model based on the MAC access mechanism and network parameters, and utilizes it along with the routing messages from multipath routing to(More)
BACKGROUND Pueraria lobata flower (Gehua) is a medicinal herb to treat intoxication, hepatic and gastrointestinal tract lesion induced by alcohol. This study aims to develop a new HPLC method for the determination of two major isoflavones in P. lobata flowers, namely tectoridin and 6"-O-xylosyl-tectoridin. METHODS A high performance liquid chromatography(More)
Recently we proposed a cross-layer design to support video communication over error-prone mobile ad-hoc networks. The idea is to utilize routing messages and network parameters to estimate the corrupted frames, and to guide the reference frame selection at the video encoder to mitigate error propagation. In this paper, we focus on the frame corruption(More)
Video communications over wireless networks suffer various patterns of losses, including both random packet loss and burst losses. Previous error resilient techniques simply consider the average packet loss rate to enhance error robustness for video transmission. However, loss patterns, specifically burst losses, have great impact on video quality. In this(More)