NDLI: Optimum wireless communication through unknown obscuring environments using the time-reversal principle: theory and experiments

Content Provider	IEEE Xplore Digital Library
Author	Jaruwatanadilok, S. Ishimaru, A. Kuga, Y.
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. Eng., Washington Univ., Seattle, WA (Jaruwatanadilok, S.; Ishimaru, A.; Kuga, Y.)
Abstract	Wireless communication in unknown and cluttered environments is an important problem which has several practical applications such as communication in urban areas and disaster areas. This paper presents a method to optimize communication efficiency in such environments. The method applies to communication between a transmitting array and receiving array where the transmitting array sends out a 'probe' signal and, at the receiving array, the transfer matrix can be constructed. From this measurement, we perform time-reversal and eigen analysis. The highest eigen value is the best possible transmission efficiency and its corresponding eigen vector represents the transmitting excitation at the transmitting elements to achieve maximum efficiency. The nature of this method makes it possible to operate and optimize in unknown, random, and cluttered environments. Here, we present the theory of time-reversal communication, show relevant numerical examples, and illustrate the experimental verification
Sponsorship	Motorola Air Force Office of Sci. Res. ANSOFT
Starting Page	707
Ending Page	710
File Size	220167
Page Count	4
File Format	PDF
ISBN	1424401232
DOI	10.1109/APS.2006.1710623
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Transmitters Optimization methods Focusing Transfer functions Eigenvalues and eigenfunctions Geometry Antenna arrays Receiving antennas Transmitting antennas
Content Type	Text
Resource Type	Article

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