2006
DOI: 10.1155/asp/2006/85870
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H.264 Layered Coded Video over Wireless Networks: Channel Coding and Modulation Constraints

Abstract: This paper considers the prioritised transmission of H.264 layered coded video over wireless channels. For appropriate protection of video data, methods such as prioritised forward error correction coding (FEC) or hierarchical quadrature amplitude modulation (HQAM) can be employed, but each imposes system constraints. FEC provides good protection but at the price of a high overhead and complexity. HQAM is less complex and does not introduce any overhead, but permits only fixed data ratios between the priority … Show more

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Cited by 18 publications
(16 citation statements)
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References 12 publications
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“…Recent years have witnessed much interest in making video quality scale with channel quality [3,26,28,45]. The general approach so far has been to divide the video stream into a base layer that is necessary for decoding the video, and an enhancement layer that improves its quality [8,13,16,36,37,48]. Proposals in this area differ mainly in how they generate the two layers and the code they use to protect them.…”
Section: Related Workmentioning
confidence: 99%
See 3 more Smart Citations
“…Recent years have witnessed much interest in making video quality scale with channel quality [3,26,28,45]. The general approach so far has been to divide the video stream into a base layer that is necessary for decoding the video, and an enhancement layer that improves its quality [8,13,16,36,37,48]. Proposals in this area differ mainly in how they generate the two layers and the code they use to protect them.…”
Section: Related Workmentioning
confidence: 99%
“…For example, some proposals consider the I (reference) frames as the base layer and the P and B (differential) frames as the enhancement layer [37,48]. Recent approaches create an explicit base layer by quantizing the video to a coarse representation, which is refined by the enhancement layers [13,36]. With layers of different importance, one has many choices for protecting them unequally.…”
Section: Related Workmentioning
confidence: 99%
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“…The general approach to video multicast divides the video stream into a base layer necessary for all receivers to decode the video, and an enhancement layer that improves the video quality for receivers with better channels [6,10,25,26]. Proposals in this area differ mainly in how they generate the two layers and the code they use to protect them.…”
Section: Related Workmentioning
confidence: 99%