Directional geographical routing for real-time video communications in wireless sensor networks
Computer Communications
Fuzzy logic control of adaptive ARQ for video distribution over a bluetooth wireless link
Advances in Multimedia
Cross-layer multiuser resource allocation for video communication over OFDM networks
Computer Communications
Low-Cost H.264/AVC Inter Frame Mode Decision Algorithm for Mobile Communication Systems
Mobile Networks and Applications
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This paper proposes a multi-stages hybrid ARQ/FEC scheme with frame skipping, reference frame selecting and intra-frame refreshing techniques for H.26L real-time video streaming over WLAN. In this paper, adaptive ARQ/FEC is adopted to save unnecessary FEC overhead; conditional frame skipping is adopted to avoid ETE delay inflation due to MAC ARQ/FEC error recovery; reference frame selecting is adopted to save bandwidth; intra-frame refreshing is adopted to prevent residual error propagation among consecutive frames. Through analysis and simulation, we show that multi-stages hybrid ARQ scheme has the following key properties: (1) high error recovery rate for real-time video frames, (2) excellent sea/ability, (3) high transmission efficiency. In case of severe unreliable channel, which causes losing a lot of IP packets, we obtain a peak signal-to-noise ratio improvement up to about 10 dB compared to the hybrid ARQ proposed in [A. Majumdar et al., June 2002].