Spectrum efficient cross-layer adaptation of Raptor codes for video multicasting over mobile broadband networks

Sgardoni, Victoria; Bull, David; Nix, Andrew R

doi:10.1016/j.pmcj.2014.05.002

Cited by 3 publications

(1 citation statement)

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“…It is possible that if further advantage of cross-layer communication could be made then the overhead of rateless coding can be reduced still further. For example in [41,42], the amount of rateless data was jointly determined by the modulation and coding scheme (MCS) at the PHY layer. It is possible that adaptation according to the wireless channel state could be combined with adaptation according to the PHY-layer MCS mode in a future cross-layer scheme.…”

Section: Rateless Code For Video Streamingmentioning

confidence: 99%

Error and Congestion Resilient Video Streaming over Broadband Wireless

et al. 2015

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Abstract:In this paper, error resilience is achieved by adaptive, application-layer rateless channel coding, which is used to protect H.264/Advanced Video Coding (AVC) codec data-partitioned videos. A packetization strategy is an effective tool to control error rates and, in the paper, source-coded data partitioning serves to allocate smaller packets to more important compressed video data. The scheme for doing this is applied to real-time streaming across a broadband wireless link. The advantages of rateless code rate adaptivity are then demonstrated in the paper. Because the data partitions of a video slice are each assigned to different network packets, in congestion-prone wireless networks the increased number of packets per slice and their size disparity may increase the packet loss rate from buffer overflows. As a form of congestion resilience, this paper recommends packet-size dependent scheduling as a relatively simple way of alleviating the buffer-overflow problem arising from data-partitioned packets. The paper also contributes an analysis of data partitioning and packet sizes as a prelude to considering scheduling regimes. The combination of adaptive channel coding and prioritized packetization for error resilience with packet-size dependent packet scheduling results in a robust streaming scheme specialized for broadband wireless and real-time streaming applications such as video conferencing, video telephony, and telemedicine. OPEN ACCESSComputers 2015, 4 114

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Section: Rateless Code For Video Streamingmentioning

confidence: 99%