Title: Low-complexity adaptive error-control schemes for real-time scalable video transmission over WLANs

Authors: Chen-Wei Lee; Tien-Wen Sung; Yih-Ching Su; Chu-Sing Yang

Addresses: Department of Electronic Engineering, Institute of Computer and Communication Engineering, Jinwen University of Science and Technology, Taipei 231, Taiwan ' Department of Electrical Engineering, Institute of Computer and Communication Engineering, National Cheng Kung University, Tainan 701, Taiwan; Department of Applied Information, Hsing Kuo University, Tainan 709, Taiwan ' Department of Information Engineering, I-Shou University, Kaohsiung 840, Taiwan ' Department of Electrical Engineering, Institute of Computer and Communication Engineering, National Cheng Kung University, Tainan 701, Taiwan

Abstract: In this paper, an adaptive video packet transmission mechanism under WLAN is proposed. In terms of the following characteristics: optimal packet length, layering and scalability of MPEG-4 FGS and Unequal Error Protection (UEP), the low calculation complication is applicable to real-time environments. The findings show that the optimal packet length can be obtained through mathematical analysis according to the current wireless network transmission status and the header overhead. Compared to several distinct scalable video transmission schemes, the simulation results reveal that our transmission scheme is capable of reacting to the varying channel condition with less and smoother quality degradation.

Keywords: WLAN; wireless LANs; local area networks; optimal packet length; UEP; unequal error protection; MPEG-4 FGS; adaptive control; error control; video transmission.

DOI: 10.1504/IJAHUC.2012.047010

International Journal of Ad Hoc and Ubiquitous Computing, 2012 Vol.9 No.4, pp.241 - 249

Published online: 24 May 2012 *

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