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• W2982670997 abstract "In this paper a cross-layer adaptive scheme is presented for transmission of H.264 encoded video over wireless channels, under a specified delay constraint. Adaptive modulation and coding (AMC) is considered at the physical layer, accompanied by type-I hybrid automatic repeat request (HARQ) at the link layer. The HARQ scheme is cognizant of the video characteristics. It prioritizes the important independent (I) frames at the cost of dependent (P) frames, maintaining the group of pictures (GOP) deadline boundaries. At the application layer, quantization parameter (QP) variation is carried out to control the rate and quality requirements. This multi-layer adaptive scheme is modelled analytically as a multivariate nested Markov chain (MC). The proposed approach takes into account both fading and shadowing effects of the wireless channel. Numerical results highlight performance benefits of the proposed model. Realistic simulation results indicate improved performance of the proposed approach over similar multi-layer adaptation schemes in terms of video quality metrics." @default.
• W2982670997 created "2019-11-08" @default.
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• W2982670997 date "2019-04-01" @default.
• W2982670997 modified "2023-09-25" @default.
• W2982670997 title "QoE-aware Cross-Layer Adaptation for Delay-Constrained Video Transmission over Wireless Channels" @default.
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• W2982670997 doi "https://doi.org/10.1109/wcnc.2019.8885439" @default.
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