Physical layer security in broadcast networks

Liang, Y. T.; Poor, H. Vincent; Shamai, Shlomo

doi:10.1002/sec.110

Cited by 37 publications

(15 citation statements)

References 27 publications

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“…There is a considerable amount of work that characterizes secrecy under varying amounts of statistical information available regarding the Alice-Bob and Alice-Eve channel state [3]. A natural next step is to make the explicit connection between how Alice can assess what information she has and how she can adjust her secret communication methods appropriately in an online manner.…”

Section: Integrating Channel Knowledge Into Practical Secrecy Dissemimentioning

confidence: 99%

“…In particular, rather than rely solely upon generic higher-layer cryptographic mechanisms, as has been the norm, there is a belief that it is possible to design lower-layer services that support security objectives such as authentication and confidentiality. There are several good surveys and collections that explore the fundamentals of physical layer security [1][2][3], but briefly these services can be summarized as follows.…”

Section: Introductionmentioning

confidence: 99%

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The challenges facing physical layer security

2015

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Section: Integrating Channel Knowledge Into Practical Secrecy Dissemimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The challenges facing physical layer security

2015

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“…While there are no secrecy constraints on the public messages, 4 When necessary, we will give references to papers where K > 2 was considered. 5 We note that this scenario is not the most general one that can be studied for the multi-receiver wiretap channel.…”

Section: B Multi-receiver Wiretap Channelsmentioning

confidence: 99%

Secure broadcasting using multiple antennas

Ekrem

Ulukuş

2010

J. Commun. Netw.

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Abstract:We consider three different secure broadcasting scenarios: i) Broadcast channels with common and confidential messages (BCC), ii) multi-receiver wiretap channels with public and confidential messages, and iii) compound wiretap channels. The BCC is a broadcast channel with two users, where in addition to the common message sent to both users, a private message, which needs to be kept hidden as much as possible from the other user, is sent to each user. In this model, each user treats the other user as an eavesdropper. The multi-receiver wiretap channel is a broadcast channel with two legitimate users and an external eavesdropper, where the transmitter sends a pair of public and confidential messages to each legitimate user. Although there is no secrecy concern about the public messages, the confidential messages need to be kept perfectly secret from the eavesdropper. The compound wiretap channel is a compound broadcast channel with a group of legitimate users and a group of eavesdroppers. In this model, the transmitter sends a common confidential message to the legitimate users, and this confidential message needs to be kept perfectly secret from all eavesdroppers. In this paper, we provide a survey of the existing information-theoretic results for these three forms of secure broadcasting problems, with a closer look at the Gaussian multiple-input multiple-output (MIMO) channel models. We also present the existing results for the more general discrete memoryless channel models, as they are often the first step in obtaining the capacity results for the corresponding Gaussian MIMO channel models.Index Terms: Broadcast channels, information theoretic security, multiple antennas.

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“…These approaches have been studied in [2], [3] and [4] based on previous studies and works of [5]. In fact, secrecy rate for the Gaussian channel has been defined in [5] as the difference between the capacity at the legitimate receiver (destination) and that at the illegitimate receiver (eavesdropper).…”

Section: Introductionmentioning

confidence: 99%

Improved relay selection for decode-and-forward cooperative wireless networks under secrecy rate maximization

Bouallegue

Hasna

Hamila

et al. 2014

2014 International Wireless Communications and Mobile Computing Conference (IWCMC)

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Privacy and security have an increasingly important role in wireless networks. A secure communication enables a legitimate destination to successfully retrieve information sent by a source, while it disables the eavesdropper (illegitimate destination) to interpret the intercepted information. Physical (PHY) layer security approaches for wireless communications can prevent eavesdropping without encryption. It exploits the physical characteristics of the wireless channel in order to transmit messages securely. They are typically feasible when the source-destination channel is better than the source-eavesdropper channel. Cooperative schemes are a means to improve the performance of secure wireless communications. We propose an improved relay selection scheme, based on source-eavesdropper channel SNR restriction, that will guarantee the best secrecy rate at the destination under QoS condition. Performance has been studied in terms of secrecy rate, outage probability and average error probability. Simulations shows that the proposed scheme outperforms in terms of the secrecy rate at the destination when compared to techniques in the literature.

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Physical layer security in broadcast networks

Cited by 37 publications

References 27 publications

The challenges facing physical layer security

The challenges facing physical layer security

Secure broadcasting using multiple antennas

Improved relay selection for decode-and-forward cooperative wireless networks under secrecy rate maximization

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