MPEG video quality prediction in a wireless system
- 20 January 2003
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2 (10903038) , 1490-1495
- https://doi.org/10.1109/vetec.1999.780595
Abstract
Wireless systems under design today promise to deliver high-bandwidth applications to mobile users in dynamic channel environments. The protocol used to control the network in a wireless system may not necessarily be able to control bit errors in its payload. Therefore, it is important to assess the impact of bit errors in a delivered data stream. This paper concentrates on the effects of bit errors on an MPEG-2 digital video sequence. A basic decoupling between bit error rate (BER) and peak signal-to-noise ratio (PSNR) was shown on previously published papers, signaling a loss of confidence on BER as a basic metric of digital system performance. This paper introduces a statistical approach to predicting video quality based solely on physical layer parameters. The mean error event length, /spl lambda//sub distance/, is a metric derived from the physical layer that can be used to predict the expected video quality across systems with different channel coding algorithms. This metric proved to be uniformly consistent in predicting video quality for sequences corrupted by additive white Gaussian noise and protected by convolutional, Reed-Solomon (RS), and concatenated (convolutional and RS) codes.Keywords
This publication has 2 references indexed in Scilit:
- On MPEG-2 decoding of noisy input dataPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Effect of error distribution in channel coding failure on MPEG wireless transmissionPublished by SPIE-Intl Soc Optical Eng ,1998