Quality-of-experience assessment and its application to video services in lte networks

Zheng, Kan, Zhang, Xiaoli, Zheng, Qiang, Xiang, Wei, and Hanzo, Lajos (2015) Quality-of-experience assessment and its application to video services in lte networks. IEEE Wireless Communications Magazine, 22 (1). pp. 70-78.

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Abstract

Reliable and repeatable video quality assessment is essential for performance analysis of wireless multimedia applications in the third generation (3G) Long Term Evolution (LTE) network. In this article we report on a database containing subjective assessment scores and the corresponding Quality-of-Service parameters of 70 video test sequences encoded with H.264, which are corrupted when transmitted over a wireless 3G LTE network simulator. Then, a new assessment method based on neural networks (NN) is proposed, whose weights are determined through training. The resulting pseudo-subjective assessment scores are then compared to the true MOS results in our database. Naturally, the accuracy of the NN-based prediction tool should be tested 'outside' of the set used for NN weight training. However, there are persistent residual errors between the predicted and subjectively evaluated MOS, which can be further reduced by particle swarm optimization, applied as post-processing of the NN weights to improve its accuracy. The proposed assessment method has potential applications, including Quality-of-Experience-aware network optimization for LTE network operators.

Item ID: 42847
Item Type: Article (Research - C1)
ISSN: 1558-0687
Funders: China Natural Science Funding (NSF), 973 Program, China, Program for New Century Excellent Talents in University, Fundamental Research Funds for the Central Universities (FRFCU), European Research Council’s Advanced Fellow Grant
Projects and Grants: NSF 61271183, 973 Program 2012CB316005, NCET-11-0600, FRFCU No. 2014ZD03-02
Date Deposited: 18 Feb 2016 02:31
FoR Codes: 10 TECHNOLOGY > 1005 Communications Technologies > 100510 Wireless Communications @ 100%
SEO Codes: 89 INFORMATION AND COMMUNICATION SERVICES > 8901 Communication Networks and Services > 890103 Mobile Data Networks and Services @ 100%
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