Error containment in compressed data using sync markers

Kiely, Aaron; Dolinar, S.; Klimesh, M.; Matache, A.

doi:10.1109/isit.2000.866726

Cited by 4 publications

(2 citation statements)

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“…To overcome this problem, a reversible VLC is proposed in [64], resulting in a higher data rate due to lower compression gain. Another possibility is to transmit additional synchronization information either within the VLC stream [65] or outside of the stream as we proposed in [38]. The resynchronization information can be advantageously represented as the position of the start of the first macroblock (MB) contained in the RLC PDU.…”

Section: Network Aware Cross-layer Processingmentioning

confidence: 99%

Link Error Analysis and Modeling for Video Streaming Cross-Layer Design in Mobile Communication Networks

Karner¹,

Nemethova²,

Svoboda³

et al. 2007

ETRI J

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Particularly in wireless communications, link errors severely affect the quality of the services due to the high error probability and the specific error characteristics (burst errors) in the radio access part of the network. In this work, we show that thorough analysis and appropriate modeling of radio-link error behavior are essential to evaluate and optimize higher layer protocols and services. They are also the basis for finding network-aware crosslayer processing algorithms which are capable of exploiting the specific properties of the link error statistics, such as predictability. This document presents the analysis of the radio link errors based on measurements in live Universal Mobile Telecommunication System (UMTS) radio access networks as well as new link error models originating from that analysis. It is shown that the knowledge of the specific link error characteristics leads to significant improvements in the quality of streamed video by applying the proposed novel network-and content-aware cross-layer scheduling algorithms. Although based on live UMTS network experience, many of the conclusions in this work are of general validity and are not limited to UMTS only.

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Section: Network Aware Cross-layer Processingmentioning

confidence: 99%

Link Error Analysis and Modeling for Video Streaming Cross-Layer Design in Mobile Communication Networks

Karner¹,

Nemethova²,

Svoboda³

et al. 2007

ETRI J

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“…A more scalable alternative to this approach is the insertion of synchronization marks -sequences of bits that cannot occur in an encoded VLC stream (e.g. analyzed in [4]). To cope with the errors that can affect also the 'in-stream' synchronization marks, in [5] an 'out-of-stream' resynchronization is proposed.…”

Section: Introductionmentioning

confidence: 99%

Error Prediction Based Redundancy Control for Robust Transmission of Video Over Wireless Links

Nemethova

Karner

Rupp

2007

2007 IEEE International Conference on Communications

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Abstract-The loss of UDP/IP packets has a high impact on the quality of the low-rate video streaming, since one UDP/IP packet typically represents a considerable part of a picture, which is discarded and concealed if an error was detected by a UDP checksum. In this work we propose a method that allows for the utilization of error-free parts of such UDP packets. The detection of errors is facilitated by the use of CRC (Cyclic Redundancy Check) information of the smaller link layer packets. Resynchronization of the variable length code at the beginning of the link layer packets is provided by using side information. To keep the additional rate small and to have low distortion at the same time, we propose sending the side information depending on the prediction of the channel quality. Experimental results show a considerable improvement in video quality at the receiver.

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