Joint source-channel coding and power adaptation for energy efficient wireless video communications

Zhai, Fan; Eisenberg, Y.; Pappas, Thrasyvoulos N.; Berry, Randall A.; Katsaggelos, Aggelos K.

doi:10.1016/j.image.2005.02.002

Cited by 27 publications

(22 citation statements)

References 24 publications

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“…This motivates the proposal of an alternative REC scheme with a guaranteed low level of complexity. The approach has its roots in the quantization theoretic (QT) rounding error analysis of (15) and (16). Specifically, for as defined in (14), we have …”

Section: ) Quantization Theoretic Approximation In Recmentioning

confidence: 99%

Advances in Recursive Per-Pixel End-to-End Distortion Estimation for Robust Video Coding in H.264/AVC

Yang

2007

IEEE Trans. Circuits Syst. Video Technol.

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Section: ) Quantization Theoretic Approximation In Recmentioning

confidence: 99%

Advances in Recursive Per-Pixel End-to-End Distortion Estimation for Robust Video Coding in H.264/AVC

Yang

2007

IEEE Trans. Circuits Syst. Video Technol.

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“…Various methods, such as cutting-plane or sub-gradient methods, can be used to search for λ 1 and λ 2 [23]. In our experimental results, we use an efficient method developed in [24] that exploits the structure of the problem in (5).…”

Section: Solution Approachmentioning

confidence: 99%

Quality metrics for measuring end-to-end distortion in packet-switched video communication systems

Eisenberg¹,

Zhai²,

Pappas³

et al. 2004

SPIE Proceedings

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A critical component of any video transmission system is an objective metric for evaluating the quality of the video signal as it is seen by the end-user. In packet-based communication systems, such as a wireless channel or the Internet, the quality of the received signal is affected by both signal compression and packet losses. Due to the probabilistic nature of the channel, the distortion in the reconstructed signal is a random variable. In addition, the quality of the reconstructed signal depends on the error concealment strategy. A common approach is to use the expected mean squared error of the end-to-end distortion as the performance metric. It can be shown that this approach leads to unpredictable perceptual artifacts. A better approach is to account for both the mean and the variance of the end-to-end distortion. We explore the perceptual benefits of this approach. By accounting for the variance of the distortion, the difference between the transmitted and the reconstructed signal can be decreased without a significant increase in the expected value of the distortion. Our experimental results indicate that for low to moderate probability of loss, the proposed approach offers significant advantages over strictly minimizing the expected distortion. We demonstrate that controlling the variance of the distortion limits perceptually annoying artifacts such as persistent errors.

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“…Examples of these approaches are scalable video coding, source rate control, bitstream switching, error control, adaptive modulation, power allocation, transcoding, and adaptive playback [1][2][3][4][5][6][7]. The authors in [3] proposed a rate control approach for video streaming over wireless channels.…”

Section: Introductionmentioning

confidence: 99%

An occupancy-based and channel-aware multi-level adaptive scheme for video communications over wireless channels

Mukhtar

Hassan

Landolsi

2011

J Wireless Com Network

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Video streaming over wireless channels is challenged with the time-varying nature of the underlying channels and the stringent requirements of video applications. In particular, video streaming has strict requirements on bandwidth, delay, and loss rate while wireless channels are dynamic and error-prone by nature. In this article, we propose a novel multilevel adaptive scheme that is designed to mitigate the challenges facing video streaming over unreliable channels. This is done while preventing potential playback discontinuities and guaranteeing a graceful degradation of the rendered video quality. Scalable video coding, adaptive modulation, and adaptive channel coding are integrated to achieve the objectives of the proposed scheme. If adaptive modulation and channel coding are not enough to guarantee the on-time delivery of decodable video frames, we adopt scalable coding. Simulation results show that the proposed adaptive scheme achieves an improvement of about 2.5 dB in the peak signal-to-noise ratio over a nonadaptive one. In addition, the proposed scheme reduces the number of starvation instances by 50 and 90% in the cases of Stop-and-Wait and Go-Back-N automatic repeat requests, respectively.

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Joint source-channel coding and power adaptation for energy efficient wireless video communications

Cited by 27 publications

References 24 publications

Advances in Recursive Per-Pixel End-to-End Distortion Estimation for Robust Video Coding in H.264/AVC

Advances in Recursive Per-Pixel End-to-End Distortion Estimation for Robust Video Coding in H.264/AVC

Quality metrics for measuring end-to-end distortion in packet-switched video communication systems

An occupancy-based and channel-aware multi-level adaptive scheme for video communications over wireless channels

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