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A new method to extend the Empirical Mode Decomposition (EMD) into the complex domain is proposed. Unlike the existing method for EMD in the complex domain, this is achieved in a generic way so that the mathematical development of this method mirrors the algorithm defined for EMD in the real domain. The so derived Intrinsic Mode Functions (IMFs) are complex(More)
Video communication within a Vehicular Ad Hoc Network (VANET) has the potential to be of considerable benefit in an urban emergency, as it allows emergency vehicles approaching the scene to better understand the nature of the emergency. However, the lack of centralized routing and network resource management within a VANET is an impediment to video(More)
— Because of restricted mobility patterns, multi-hop routing, and wireless channel conditions, streaming video over a Vehicular Ad Hoc Network (VANET) is a daunting task. This paper demonstrates that H.264 codec Flexible Macroblock Ordering (FMO) with receiver error concealment is capable of streaming good-quality video across a VANET. FMO is shown to be(More)
This paper demonstrates that Growth codes, based on Raptor channel coding, allow incremental protection of H.264 video codec data-partitioned Network Adaption Layer units. When combined with increased protection of video reference frames, in an ADSL erasure channel up to 10 dB in video quality (PSNR) can be gained through this scheme compared to equal error(More)
Multimedia exchange within a Vehicular Ad Hoc Network (VANET) may be facilitated by exploiting the peer-to-peer (P2P) paradigm for which a multi-path routing protocol has been designed to reduce packet loss. Urban VANETs are characterized by restricted vehicle mobility, driver actions, and bunching at obstacles, leading to wireless interference and broken(More)
Peer-to-Peer (P2P) streaming and Mobile Ad hoc Networks (MANETs) have turned out to be two of the most active research areas for pervasive computing. These areas were developed independently of each other with the result that there is insufficient verification of whether the P2P distribution paradigm and specifically P2P real-time video streaming would work(More)
In this paper, we consider multicast video clip streaming in an ad hoc network. Efficient delivery of video is accomplished by means of a Peer-to-Peer (P2P) overlay network. To exploit multi-path transport the paper introduces layered video streaming without the need for base layer protection. In an urban environment with higher node densities and lower(More)