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The latest High Efficiency Video Coding (HEVC) has been increasingly used to generate video streams over Internet. However, the decoded HEVC video streams may incur severe quality degradation, especially at low bit-rates. Thus, it is necessary to enhance visual quality of HEVC videos at the decoder side. To this end, we propose in this paper a Decoder-side Scalable Convolutional Neural Network (DS-CNN)...
Quality of user Experience (QoE) is one of the most important issues for scalable video over OFDMA networks. Given the OFDMA frame structure, scheduling tasks can be classified into 1) intraframe scheduling and 2) interframe scheduling. While many studies have focused on how to enhance the QoE through intraframe scheduling, few studies have examined the potential of interframe scheduling. The only...
This paper proposes the first resource allocation scheme in the literature to support scalable-video multicast for WiMAX relay networks. We prove that when the available bandwidth is limited, the bandwidth allocation problems of 1) maximizing network throughput and 2) maximizing the number of satisfied users are NP-hard. To find the near-optimal solutions to this type of maximization problem in polynomial...
Mobile WiMAX is a promising technology to enable the wireless video multicast services, such as mobile IPTV and live athletic events. For supporting such bandwidth-eager and energy-hungry applications, the efficient bandwidth-allocation and energy-saving mechanisms should be simultaneously employed. In this paper, we first investigate how the WiMAX energy-saving mechanism significantly degrades the...
Inter-platform streaming multimedia between embedded systems has encountered the problem of head-of-line blocking and non-real-time transmission/receiving. When a mobile device in an embedded system moves between subnets, the node will face the handover problem. In this paper, we utilize stream control transmission protocol (SCTP) features to develop the multimedia communications including streaming...
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