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

Zheng, Kan and Zhang, Xiaoli and Zheng, Qiang and Xiang, Wei and Hanzo, Lajos (2015) Quality-of-experience assessment and its application to video services in LTE networks. IEEE Wireless Communications, 22 (1). pp. 70-78. ISSN 1536-1284

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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2002-2012 IEEE. Permanent restricted access to published version due to publisher copyright policy.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 27 Mar 2015 03:09
Last Modified: 06 Jun 2017 02:43
Uncontrolled Keywords: long term evolution; LTE; particle swarm optimization; PSO; quality control; quality of service
Fields of Research : 08 Information and Computing Sciences > 0803 Computer Software > 080305 Multimedia Programming
10 Technology > 1006 Computer Hardware > 100605 Performance Evaluation; Testing and Simulation of Reliability
15 Commerce, Management, Tourism and Services > 1503 Business and Management > 150313 Quality Management
Socio-Economic Objective: B Economic Development > 89 Information and Communication Services > 8901 Communication Networks and Services > 890103 Mobile Data Networks and Services
Identification Number or DOI: 10.1109/MWC.2015.7054721
URI: http://eprints.usq.edu.au/id/eprint/26967

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