Secrecy in cooperative relay broadcast channels

Ekrem, Ersen; Ulukuş, Şennur

doi:10.1109/isit.2008.4595384

Cited by 63 publications

(65 citation statements)

References 30 publications

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“…The signals are received by the legitimate user as a sequence Multiple-user versions of the secrecy problem have been considered for various channel models. [22], [23] consider multiple-access channels, [24], [25] consider broadcast channels, and [26]- [29] consider secrecy in relay channels.…”

Section: Information-theoretic Secrecymentioning

confidence: 99%

Secure network coding for wireless routing

Chen

2014

2014 IEEE International Conference on Communications (ICC)

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Nowadays networking is secure because we encrypt the confidential messages with the underlying assumption that adversaries in the network are computationally bounded. For traditional routing or network coding, routers know the contents of the packets they receive. Networking is not secure any more if there are eavesdroppers with infinite computational power at routers. Our concern is whether we can achieve stronger security at routers. This paper proposes secure network coding for wireless routing. Combining channel coding and network coding, this scheme can not only provide physical layer security at wireless routers but also forward data error-free at a high rate. In the paper we prove this scheme can be applied to general networks for secure wireless routing.

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Section: Information-theoretic Secrecymentioning

confidence: 99%

Secure network coding for wireless routing

Chen

2014

2014 IEEE International Conference on Communications (ICC)

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“…Practical applications of low-density parity-check (LDPC) codes for Gaussian wiretap channel were studied in [25][26][27]. The physical-layer security in cooperative relaying networks has also been investigated in recent research works [28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Eavesdropping mitigation for wireless communications over single‐input–single‐output channels

Liu

2015

IET Communications

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In this study, the authors investigate eavesdropping mitigation for wireless communications with physical-layer security techniques. They consider a multicasting scenario with one transmitter, multiple trusted receivers and multiple eavesdroppers, each equipped with one antenna. Aiming at protecting trusted communications from data interception, they develop two novel waveform designs for eavesdropping reduction under two scenarios: (i) when the eavesdroppers' channel state information (CSI) is known, they design the waveform and transmit energy which can minimise the maximal signal-to-interference-plus-noise ratios (SINRs) at the eavesdroppers while achieving guaranteed SINRs at the trusted receivers and (ii) when the eavesdroppers' CSIs are not available, they adopt 'artificial noise' (AN) strategy aiming at generating as much disturbance to eavesdroppers as possible. A novel waveform and transmit power design is proposed which can maximise the AN's energy with assured quality-of-service at trusted receivers. Extensive simulation studies illustrate the efficiency of the proposed designs for eavesdropping mitigation in wireless communications.

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“…Diversity techniques, in which Alice, Bob and/or Eve may be equipped with multiple antennas, are investigated in [5][6][7][8]. Recently, cooperative communication schemes have also been analyzed in the context of PHY security [9][10][11][12], and more recently [13] gives a summary of recent advances in cooperative security at the physical layer.…”

Section: Introductionmentioning

confidence: 99%

On the performance of full-duplex relaying under phy security constraints

Alves

Brante

Souza

et al. 2014

2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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In this paper we investigate the performance of a cooperative network in the presence of an eavesdropper (Eve). Alice and Bob communicate with the help of a relay, which can operate either in halfduplex (HD) or full-duplex (FD) mode. We account for the self interference at the relay when operating under FD mode. Our analysis focus in the case that the CSI of Eve is not available at Alice. Thus, we derive closed-form expressions for secrecy outage probability. Our results allow us to compare the performance of FD and HD cooperative scenarios under secrecy constraints and, despite the additional interference at the relay, show the advantages of FD relaying over HD. In addition, we also show that a cooperative network is more vulnerable if Eve is closer to Alice than to the relay.Index Terms-Physical layer security, full-duplex relaying, secrecy outage probability.

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Secrecy in cooperative relay broadcast channels

Cited by 63 publications

References 30 publications

Secure network coding for wireless routing

Secure network coding for wireless routing

Eavesdropping mitigation for wireless communications over single‐input–single‐output channels

On the performance of full-duplex relaying under phy security constraints

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