NDLI: Robust wireless video multicast using distributed antennas-based IEEE 802.11n infrastructure

Content Provider	IEEE Xplore Digital Library
Author	Vella, J.M. Zammit, S.
Copyright Year	2013
Description	Author affiliation: Dept. of Commun. & Comput. Eng., Univ. of Malta, Msida, Malta (Vella, J.M.; Zammit, S.)
Abstract	Wireless Video Multicast is prone to suffer from frequent packet losses, resulting from the fact that the IEEE 802.11 standard does not use any mechanisms such as Acknowledgements and retransmissions, to combat the errors that are common in the dynamic wireless medium. However this paper shows that the infrastructure can be adapted to reduce the wireless errors, by using spatial diversity and spatial expansion to combat the wireless medium's random nature. This is obtained by adding a number of antennas placed equidistantly at the edge of the coverage area, using the same total transmit power that would be used with one transmit antenna. Moreover, this paper shows that since the IEEE 802.11n, the standard which facilitates the use of multiple antennas, states that the maximum number of antennas at any transceiver is four, two Access Points can be used to transmit the same data packet in orthogonal time slots to transmit good quality H.264 video resulting in all nodes experiencing an average Peak Signal to Noise Ratio greater than 36dB for MCS-5 and MCS-6 for a coverage area having radius of 60m. Since only two time slots are used, these results are obtained with a ½ code rate which is an improvement to the code rate used in current cooperative schemes.
Starting Page	415
Ending Page	422
File Size	820045
Page Count	8
File Format	PDF
ISBN	9781467322300
e-ISBN	9781467322324
DOI	10.1109/EUROCON.2013.6625016
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-01
Publisher Place	Croatia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transmitting antennas Receivers IEEE 802.11n Standard PSNR Wireless communication Mathematical model WLAN wireless video multicast spatial diversity spatial expansion cooperative networks
Content Type	Text
Resource Type	Article

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