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Cited by 275

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Secure Broadcasting Over Fading Channels

Khisti, Ashish, Tchamkerten, Aslan, Wornell, Gregory W.·2008·IEEE Transactions on Information Theory

Abstract

We study a problem of broadcasting confidential messages to multiple receivers under an information-theoretic secrecy constraint. Two scenarios are considered: 1) all receivers are to obtain a common message; and 2) each receiver is to obtain an independent message. Moreover, two models are considered: parallel channels and fast-fading channels. For the case of reversely degraded parallel channels, one eavesdropper, and an arbitrary number of legitimate receivers, we determine the secrecy capacity for transmitting a common message, and the secrecy sum-capacity for transmitting independent messages. For the case of fast-fading channels, we assume that the channel state information of the legitimate receivers is known to all the terminals, while that of the eavesdropper is known only to itself. We show that, using a suitable binning strategy, a common message can be reliably and securely transmitted at a rate independent of the number of receivers. We also show that a simple opportunistic transmission strategy is optimal for the reliable and secure transmission of independent messages in the limit of large number of receivers.

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Metadata

Authors
Khisti, A., Tchamkerten, A., & Wornell, G. W.
Venue
IEEE Transactions on Information Theory
Published
2008-06
Volume
54
Issue
6
Pages
2453-2469
ISSN
0018-9448 (ISSN-L)
OpenAlex
W2172233962
Cited by
275
References
2
FWCI
23.61
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Secure Broadcasting Over Fading Channels. https://app.cochat.ai/papers/10.1109/tit.2008.921861
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Khisti, A., Tchamkerten, A., & Wornell, G. W. (2008). Secure Broadcasting Over Fading Channels. IEEE Transactions on Information Theory. https://doi.org/10.1109/tit.2008.921861

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