Layered H.264 video transmission with hierarchical QAM

Ghandi, Mohammad Mahdi; Ghanbari, M.

doi:10.1016/j.jvcir.2005.05.005

Cited by 53 publications

(45 citation statements)

References 15 publications

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“…The smaller packet has less probability of loss. M.M Gandhi and M.Ghanibari [12] also evluate performance of slice structuring with different number of slices per frame with different bit-error rate as shown in Fig 4.4. The slice structuring gives better quality as compared to with out slice structuring.But overhaed increase with increasing in slices per frame which degarde the quality in error free enviorments but give better quality in error enviorments [9].…”

Section: Fig 43 Video Quailty (Psnr) Depening On Frame Brust Length[9]mentioning

confidence: 77%

Analysis of Video Coding and Error Resilience Tools of H. 264/AVC in Wireless Environment

Javed¹,

Khan²,

Asif³

et al. 2012

IJCA

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Recently more and more telecommunication systems are supporting different kinds of real-time transmission, video transmission being one of the most important application.In wireless environments, channel bandwidth and high packet loss rate are to main limitations in the way of delivering of a good quality video to the end user. Therefore, in applications such as video over wireless networks, a video codec should have ability to handle the erroneous situations of the channels well as the bandwidth limitations.H.264/AVC is the newest international video coding standard, jointly developed by groups from ISO/IEC and ITUT.It has several error resilience techniques to make a video bit stream robust in the erroneous channels conditions and also achieves a significant improvement in the compression efficiency. We analyze various error resilienceschemes and innovative featuresof H.264/AVC for real time video streaming .The focus of the work is to test video coding and error resilience tools of H.264/AVC in real timeenvironment over wireless networks.

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Section: Fig 43 Video Quailty (Psnr) Depening On Frame Brust Length[9]mentioning

confidence: 77%

Analysis of Video Coding and Error Resilience Tools of H. 264/AVC in Wireless Environment

Javed¹,

Khan²,

Asif³

et al. 2012

IJCA

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“…DVB-H provides a built-in function that helps exploiting the video scalability features using the Hierarchical Modulation [24]. It offers an efficient way of carrying multimedia services over terrestrial broadcasting networks to hand-held terminals.…”

Section: Dvb-h Specific Solution Approachesmentioning

confidence: 99%

User-Centric Energy-Efficient Multimedia Multicast/Broadcast Solutions: A Survey

Singhal¹,

De²

2015

ICST Transactions on Ubiquitous Environments

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Multimedia multicast/broadcast transmissions provide simultaneous access to a common service to the heterogeneous user equipments (UEs) with different device and channel characteristics. One of the major challenges to the service providers is the exponential growth of energy-constrained UEs. In this context, the optimization of multimedia multicast/broadcast transmissions that consider the constraints imposed by the UEs is a major concern of the service providers to ensure high Quality of Experience levels to the customers with diverse constraints. This paper presents an overview of the multimedia multicast/broadcast challenges and open issues, identifies the main factors and the associated constraints that impact the multimedia transmission, and provides a comprehensive classification, comparison, and analysis of the state-of-the-art user-centric, energyefficient multimedia multicast/broadcast approaches.

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“…In [2][3], joint source-channel coding and hierarchical modulation techniques were employed to optimize the perceptual video quality. In [21], the hierarchical QAM design for H.264/AVC codecs was studied. In [22], our co-author studied asymmetric 8-PSK for adaptive transmission strategies in mobile ad hoc networks.…”

Section: Related Researchmentioning

confidence: 99%

“…For example, in [21], the modulation asymmetry parameter α was chosen to be either 2 or 4 heuristically. In [19], the asymmetry parameter θ was chosen adaptively based on feedback from the receiver.…”

Section: Novelty Of the Proposed Approachmentioning

confidence: 99%

A Cross-Layer Unequal Error Protection Scheme for Prioritized H.264 Video using RCPC Codes and Hierarchical QAM

Chung

Kumar

Paluri³

et al. 2013

Journal of Information Processing Systems

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Abstract-We investigate the rate-compatible punctured convolutional (RCPC) codes concatenated with hierarchical QAM for designing a cross-layer unequal error protection scheme for H.264 coded sequences. We first divide the H.264 encoded video slices into three priority classes based on their relative importance. We investigate the system constraints and propose an optimization formulation to compute the optimal parameters of the proposed system for the given source significance information. An upper bound to the significance-weighted bit error rate in the proposed system is derived as a function of system parameters, including the code rate and geometry of the constellation. An example is given with design rules for H.264 video communications and 3.5-4 dB PSNR improvement over existing RCPC based techniques for AWGN wireless channels is shown through simulations.

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Layered H.264 video transmission with hierarchical QAM

Cited by 53 publications

References 15 publications

Analysis of Video Coding and Error Resilience Tools of H. 264/AVC in Wireless Environment

Analysis of Video Coding and Error Resilience Tools of H. 264/AVC in Wireless Environment

User-Centric Energy-Efficient Multimedia Multicast/Broadcast Solutions: A Survey

A Cross-Layer Unequal Error Protection Scheme for Prioritized H.264 Video using RCPC Codes and Hierarchical QAM

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