Comparison of rate allocation strategies for H.264 video transmission over wireless lossy correlated networks

Gnavi, S.; Grangetto, Marco; Magli, Enrico; Olmo, Gabriella

doi:10.1109/icme.2003.1221667

Cited by 11 publications

(5 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4, we illustrate a plot of PSNR versus the packet loss rate with for the Foreman sequence at , which is in the range of low bit-rate services. The average burst length is chosen to be as described in [14], [25] in order to provide a representative burst-length distribution as expected in a typical UMTS network. The proposed adaptive scheme can be seen to achieve a much higher performance in terms of end-to-end PSNR compared to the representative nonadaptive schemes which apply the RS (15,9) code to every frame, together with fixed intra-updating rates, regardless of its motion level and other source/channel conditions.…”

Section: B Selected Simulation Results and Discussionmentioning

confidence: 99%

An Adaptive Motion-Based Unequal Error Protection Approach for Real-Time Video Transport Over Wireless IP Networks

Pei

Modestino

2006

IEEE Trans. Multimedia

View full text Add to dashboard Cite

In this work, we consider the delivery of digital video over future 3G wireless IP networks and we propose a low-complexity adaptive motion-based unequal error protection (UEP) video coding and transmission system which efficiently combines three existing error-resilience techniques by exploiting knowledge of the source material as well as the channel operating conditions. Given this information, the proposed system can adaptively adjust the operating parameters of the video source encoder and the forward error correction (FEC) channel encoder to maximize the delivered video quality based upon both application-layer video motion estimates and link-layer channel estimates. We demonstrate the efficacy of this approach using the ITU-T H.264 video source coder. The results indicate that a significant performance improvement can be achieved with enhanced resilience to inaccurate channel feedback information and with substantially reduced computational complexity compared to competing approaches.

show abstract

Section: B Selected Simulation Results and Discussionmentioning

confidence: 99%

An Adaptive Motion-Based Unequal Error Protection Approach for Real-Time Video Transport Over Wireless IP Networks

Pei

Modestino

2006

IEEE Trans. Multimedia

View full text Add to dashboard Cite

show abstract

“…1 reports the average burst length of packet errors, as a function of packet payload size (i.e., the size of each slice). As can be seen, at typical packet sizes (e.g., from 500 to 1500 bytes) the average burst length is always larger than one, and typically lies between 1.5 and 2.5 [25]. This indicates that not only the event of losing one complete frame is most likely, but one should also take into account the possibility that two (or more) consecutive frames are lost.…”

Section: B Motivationmentioning

confidence: 94%

Concealment of whole-frame losses for wireless low bit-rate video based on multiframe optical flow estimation

Belfiore

Grangetto

Magli

et al. 2005

IEEE Trans. Multimedia

Self Cite

View full text Add to dashboard Cite

In low bit-rate packet-based video communications, video frames may have very small size, so that each frame fills the payload of a single network packet; thus, packet losses correspond to whole-frame losses, to which the existing error concealment algorithms are badly suited and generally not applicable. In this paper, we deal with the problem of concealment of whole frame-losses, and propose a novel technique which is capable of handling this very critical case. The proposed technique presents other two major innovations with respect to the state-of-the-art: i) it is based on optical flow estimation applied to error concealment and ii) it performs multiframe estimation, thus optimally exploiting the multiple reference frame buffer featured by the most modern video coders such as H.263+ and H.264. If data partitioning is employed, by e.g., sending headers, motion vectors, and coding modes in prioritized packets as can be done in the DiffServ network model, the algorithm is capable of exploiting the motion vectors to improve the error concealment results. The algorithm has been embedded in the H.264 test model software, and tested under both independent and correlated packet loss models with parameters typical of the wireless environment. Results show that the proposed algorithm significantly outperforms other techniques by several dBs in peak signal-to-noise ratio (PSNR), provides good visual quality, and has a rather low complexity, which makes it possible to perform real-time operation with reasonable computational resources.Index Terms-Optical flow estimation, packet-based video transmission, video error concealment, whole-frame losses, wireless communications.

show abstract

“…The response packet we use is 5bytes long including 32 bits packet index and 8 bits response type information. Refers to the network interference to data packet and response packet, the burst error affects the smaller packet, as response packet [14] , much more, while the packet loss rate is higher to longer packet, as data packet, in the same bit error rate environment [8] .…”

Section: ) Timingmentioning

confidence: 98%

“…simulate a more reliable, lower error-rate bearer that is required in conversational applications [8] . We choose pattern 1 in our parameter optimization simulation and set the corresponding packet loss rate and burst errors in [8] and [14] for data transmission packet and the response packet depending on the different packet size.…”

Section: ) Timingmentioning

confidence: 99%

See 1 more Smart Citation

A novel hybrid ARQ scheme for reliable wireless communication based on rate-compatible punctured turbo (RCPT) codes

Jin

Zhu

2004

SPIE Proceedings

View full text Add to dashboard Cite

With the popularity of wireless communication, much attention has been drawn to the reliable transmission for the fading and shadowing channels. In this paper, after a careful analysis of several existing schemes of hybrid ARQ with rate compatible punctured turbo (RCPT) codes, a novel hybrid ARQ scheme is proposed to fit for the unideal feedback channel in the worse wireless communication environment, which results in many advantages and improves performance of data transmission in practical wireless network.

show abstract

Comparison of rate allocation strategies for H.264 video transmission over wireless lossy correlated networks

Cited by 11 publications

References 5 publications

An Adaptive Motion-Based Unequal Error Protection Approach for Real-Time Video Transport Over Wireless IP Networks

An Adaptive Motion-Based Unequal Error Protection Approach for Real-Time Video Transport Over Wireless IP Networks

Concealment of whole-frame losses for wireless low bit-rate video based on multiframe optical flow estimation

A novel hybrid ARQ scheme for reliable wireless communication based on rate-compatible punctured turbo (RCPT) codes

Contact Info

Product

Resources

About