Home // ICDT 2011, The Sixth International Conference on Digital Telecommunications // View article
Authors:
Sanghyun Bak
Jaekwon Kim
Keywords: UEP, H.264/AVC, MIMO, Joint Detection, ML, Spatial Mutiplexing
Abstract:
Recently, unequal error protection (UEP) techniques for video transmission over multiple-input multiple-output (MIMO) wireless channel have been actively researched. Spatially multiplexed (SM) MIMO system with joint detection achieves a good bit error rate (BER) performance as well as a high data rate, however, UEP can not be implemented because all the physical (PHY) layer signals are jointly detected. In transmitting video streams, peak signal to noise ratio (PSNR) is important rather than BER, and it is well known that PSNR is improved by UEP. In this paper, we propose an UEP technique for wireless video streaming using SM MIMO system with a suboptimal joint signal detection method. Computer simulations demonstrate that the PSNR performance of QR-LRL-based UEP, that is computationally very efficient when compared with the conventional optimal maximum likelihood (ML) detection, is slightly better than that of the optimal ML detection that is considerably more computation intensive.
Pages: 91 to 96
Copyright: Copyright (c) IARIA, 2011
Publication date: April 17, 2011
Published in: conference
ISSN: 2308-3964
ISBN: 978-1-61208-127-4
Location: Budapest, Hungary
Dates: from April 17, 2011 to April 22, 2011