Adaptive rateless coding for data-partitioned video streaming over a broadband wireless channel

Al-Jobouri, Laith; Fleury, Martin; Ghanbari, M.

doi:10.1109/wiad.2010.5544877

Cited by 5 publications

(8 citation statements)

References 10 publications

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“…In [8], unequal Growth codes have been proposed where as the number of packets the receiver has increases, the degree for each new encoding symbol needs to increase, hence the name Growth codes. An adaptive rateless coding for DP AVC coded video has been proposed in [9]. The proposed system uses intracoded macroblocks (MBs) in each frame; some additional redundant data is piggybacked onto the ongoing packet stream.…”

Section: International Journal Of Digital Multimedia Broadcastingmentioning

confidence: 99%

Rate Adaptive Selective Segment Assignment for Reliable Wireless Video Transmission

Nazir

Vukobratović

Stankovic

et al. 2012

International Journal of Digital Multimedia Broadcasting

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A reliable video communication system is proposed based on data partitioning feature of H.264/AVC, used to create a layered stream, and LT codes for erasure protection. The proposed scheme termed rate adaptive selective segment assignment (RASSA) is an adaptive low-complexity solution to varying channel conditions. The comparison of the results of the proposed scheme is also provided for slice-partitioned H.264/AVC data. Simulation results show competitiveness of the proposed scheme compared to optimized unequal and equal error protection solutions. The simulation results also demonstrate that a high visual quality video transmission can be maintained despite the adverse effect of varying channel conditions and the number of decoding failures can be reduced.

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Section: International Journal Of Digital Multimedia Broadcastingmentioning

confidence: 99%

Rate Adaptive Selective Segment Assignment for Reliable Wireless Video Transmission

Nazir

Vukobratović

Stankovic

et al. 2012

International Journal of Digital Multimedia Broadcasting

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“…However, retransmission only occurs once to reduce delay and the additional redundant data is piggybacked onto the next outgoing packet. Because the adaptive component is not the main focus of this paper, the reader is referred elsewhere [14] for details.…”

Section: B Transmission Protection Schemementioning

confidence: 99%

Impact of intra-refresh provision on a data-partitioned wireless broadband video streaming scheme

Al-Jobouri

Fleury

Ghanbari

2010

2010 2nd Computer Science and Electronic Engineering Conference (CEEC)

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Abstract-Intra-refresh macroblocks are normally provided in mobile broadband wireless access to avoid the effect of temporal error propagation. The questions then arise are: in what form should the refresh take place; and what percentage of refresh is necessary. This paper is a study of intra-refresh provision in the context of a robust video streaming scheme. The scheme combines data-partitioned video compression with adaptive channel coding and redundant packets. The main conclusions from a detailed analysis are that: because of the effect on packet size it is important to select a moderate quantization parameter; and because of the higher overhead from cyclic intra macroblock line update it is better to select a low percentage per frame of intra-refresh macroblocks. In harsh channel conditions from the combined effect of slow and fast fading producing 'bursty' errors, all the proposed measures are necessary but then periodic intra-refresh can be avoided with its sudden increases in the datarate if the proposed levels of intra-refresh macroblocks are applied.

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“…The wireless channel characteristics also had to be known in advance by the encoder. However, leaving aside the computational complexity of the optimization search in [9], there is another key difference between the system of [9] and that of [5] and this paper. In [9] no feedback occurs, so that it is not possible to request additional redundant data.…”

Section: Introductionmentioning

confidence: 99%

“…In previous research by the authors [5], data-partitioned video streaming was employed as a means of separating out the more important source-coded data. In such datapartitioned video, the compressed video bitstream is split into up to three partitions before packetization, according to the importance of the content type to the decoding of the video.…”

Section: Introductionmentioning

confidence: 99%

“…In general, smaller, less error-prone, packet sizes result and, for broadcast quality video, the more important data are carried in the smallest packets. In our previous work [5], all such packets were protected against errors with EEP, irrespective of their size. However, it is also possible [6] to apply UEP by duplicating one or more of the higherpriority segments but not duplicating the less important packets.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Protecting H.264/AVC Data-Partitioned Video Streams over Broadband WiMAX

Al-Jobouri

Fleury

Ghanbari

2012

Advances in Multimedia

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Broadband wireless technology, though aimed at video services, also poses a potential threat to video services, as wireless channels are prone to error bursts. In this paper, an adaptive, application-layer Forward Error Correction (FEC) scheme protects H.264/AVC data-partitioned video. Data partitioning is the division of a compressed video stream into partitions of differing decoding importance. The paper determines whether equal error protection (EEP) through FEC of all partition types or unequal error protection (UEP) of the more important partition type is preferable. The paper finds that, though UEP offers a small reduction in bitrate, if EEP is employed, there are significant gains (several dBs) in video quality. Overhead from using EEP rather than UEP was found to be around 1% of the overall bitrate. Given that data partitioning already reduces errors through packet size reduction and differentiation of coding data, EEP with data partitioning is a practical means of protecting user-based video streaming. The gain from employing EEP is shown to be higher quality video to the user, which will result in a greater take-up of video services. The results have implications for other forms of prioritized video streaming.

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Adaptive rateless coding for data-partitioned video streaming over a broadband wireless channel

Cited by 5 publications

References 10 publications

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Impact of intra-refresh provision on a data-partitioned wireless broadband video streaming scheme

Protecting H.264/AVC Data-Partitioned Video Streams over Broadband WiMAX

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