NDLI: Relative-entropy based beamforming for secret key transmission

Content Provider	IEEE Xplore Digital Library
Author	Boyer, R. Delpha, C.
Copyright Year	2012
Description	Author affiliation: Université Paris-Sud 11 / CNRS / SUPELEC, Laboratoire des Signaux et Systèmes, Supelec, 3, rue Joliot-Curie, 91192 Gif-sur-Yvette, France (Boyer, R.; Delpha, C.)
Abstract	In the context of the MISO flat-fading channel, we deal with the transmission of a secret key. More precisely, we seek to find the transmit beamformer to minimize the error probability of the legitimate receivers while maintaining a high (close to one) error probability for the eavesdroppers. To reach this goal, we exploit the popular “artificial noise” strategy which allows to confuse the eavesdroppers while the legitimate receivers are not affected. Under the low noise regime assumption for the eavesdroppers, we first derive the balancing coefficient to reach the constraint of high error probability for the eavesdroppers. Given this value, we find the optimal beamformer which minimizes the error probability of the legitimate receivers. We finally study the behavior of the error probability of the legitimate receivers with respect to the Signal To Noise Ratio and to the number of antennas at the transmission.
Starting Page	265
Ending Page	268
File Size	368211
Page Count	4
File Format	PDF
ISBN	9781467310703
ISSN	2151870X
e-ISBN	9781467310710
DOI	10.1109/SAM.2012.6250485
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Receivers Error probability Signal to noise ratio Entropy Transmitting antennas
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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