NDLI: Empowering full-duplex wireless communication by exploiting directional diversity

Content Provider	IEEE Xplore Digital Library
Author	Everett, E. Duarte, M. Dick, C. Sabharwal, A.
Copyright Year	2011
Description	Author affiliation: Xilinx, Inc., San Jose, CA, 95124 USA (Dick, C.) \|\| Department of Electrical and Computer Engineering, Rice University, Houston, TX, 77005 USA (Everett, E.; Duarte, M.; Sabharwal, A.)
Abstract	The use of directional antennas in wireless networks has been widely studied with two main motivations: 1) decreasing interference between devices and 2) improving power efficiency. We identify a third motivation for utilizing directional antennas: pushing the range limitations of full-duplex wireless communication. A characterization of full-duplex performance in the context of a base station transmitting to one device while receiving from another is presented. In this scenario, the base station can exploit “directional diversity” by using directional antennas to achieve additional passive suppression of the self-interference. The characterization shows that at 10 m distance and with 12 dBm transmit power the gains over half-duplex are as high as 90% and no lower than 60% as long as the directional antennas at the base station are separated by 45° or more. At 15 m distance the gains are no lower than 40% for separations of 90° and larger. Passive suppression via directional antennas also allows full-duplex to achieve significant gains over half-duplex even without resorting to the use of extra hardware for performing RF cancellation as has been required in the previous work.
Starting Page	2002
Ending Page	2006
File Size	1151616
Page Count	5
File Format	PDF
ISBN	9781467303217
ISSN	10586393
e-ISBN	9781467303231
DOI	10.1109/ACSSC.2011.6190376
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio frequency Base stations Directional antennas Directive antennas Mobile communication Antenna measurements
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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