Robust amplify‐and‐forward relay beamforming for security with mean square error constraint

Gong, Xiangwu; Long, Hong Yao; Yin, Hao; Dong, Feihong; Ren, Baoquan

doi:10.1049/iet-com.2014.1112

Cited by 17 publications

(18 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cooperative jamming schemes have been proposed in [10][11][12][13][14] to enhance the physical layer security of cooperative relay networks. In [15][16][17][18][19], cooperative beamforming schemes have been carried out to enhance the physical layer security. However, this introduces a significant system complexity in terms of cooperative jamming transmissions as well as the phase and relative amplitude control.…”

Section: Introductionmentioning

confidence: 99%

Improving secrecy for multi‐relay multi‐eavesdropper wireless systems through relay selection

Ding

Song

Zou

et al. 2016

Trans. Emerging Tel. Tech.

View full text Add to dashboard Cite

In this paper, we consider a cooperative relay network consisting of a source, a destination and multiple decode-andforward relays in the presence of multiple eavesdroppers, which intend to tap confidential messages transmitted by both the source and relays. We propose both the so-called secrecy maximisation oriented relay selection (SMORS) and multirelay oriented relay selection (MRORS) schemes to improve the physical layer security of wireless communications. In the SMORS scheme, a single relay with the maximal secrecy rate is selected among all the decode-and-forward relays to forward the source signal. By contrast, in the MRORS scheme, the relays that succeed in decoding the source signal will be employed to simultaneously forward their decoded signals to the destination. We analyse the intercept probability of the SMORS and MRORS schemes as well as the traditional max-min relay selection scheme. It is shown that the proposed MRORS scheme outperforms the SMORS and max-min relay selection schemes in terms of the intercept probability. Additionally, it is shown that with an increasing number of eavesdroppers, the intercept performance of wireless communications degrades, which can be well addressed using the SMORS and MRORS schemes through increasing the number of relays. By contrast, increasing the number of relays has little impact on the intercept probability for the conventional max-min relay selection scheme Transactions on Emerging Telecommunications Technologies.

show abstract

Section: Introductionmentioning

confidence: 99%

Improving secrecy for multi‐relay multi‐eavesdropper wireless systems through relay selection

Ding

Song

Zou

et al. 2016

Trans. Emerging Tel. Tech.

View full text Add to dashboard Cite

show abstract

“…In [21], the authors considered Gaussian errors model and average MSE constraint focusing entirely on system performance. In this section, we provide a norm-bounded CSI error model and a security transmission scheme under the constraint of worst-case SINR placing the highest emphasis on fairness.…”

Section: Csi Uncertainty and Problem Formulationmentioning

confidence: 99%

“…However, it is known that the secrecy rate can not be optimized directly in the presence of a passive eavesdropper. In [21], the authors studied the robust AF relay beamforming security scheme in presence of a passive eavesdropper where CSI errors were modeled as Gaussian and average mean square error(MSE) constraint was considered focusing entirely on system performance. Different from [21], this study considers a norm-bounded error model and the worst-case SINR constraint placing the highest emphasis on fairness.…”

Section: Introductionmentioning

confidence: 99%

Robust Cooperative Relay Beamforming Design for Security

2015

KSII TIIS

View full text Add to dashboard Cite

In this paper, we investigate a security transmission scheme at the physical layer for cooperative wireless relay networks in the presence of a passive eavesdropper. While the security scheme has been previously investigated with perfect channel state information(CSI) in the presence of a passive eavesdropper, this paper focuses on researching the robust cooperative relay beamforming mechanism for wireless relay networks which makes use of artificial noise (AN) to confuse the eavesdropper and increase its uncertainty about the source message. The transmit power used for AN is maximized to degrade the signal-to-interference-plus-noise-ratio (SINR) level at the eavesdropper, while satisfying the individual power constraint of each relay node and worst-case SINR constraint at the desired receiver under a bounded spherical region for the norm of the CSI error vector from the relays to the destination. Cooperative beamforming weight vector in the security scheme can be obtained by using S-Procedure and rank relaxation techniques. The benefit of the proposed scheme is showed in simulation results.

show abstract

“…Such framework was a scheduler which would widely tolerate CSI uncertainty. A new scheme was proposed in the previous study by Gong et al defining a target minimum mean square error for the licensed user with respect to (wrt) channel uncertainty at the receiver. In the previous study by Li et al, a polynomial‐time optimisation approach was provided for MIMOME‐based relay networks, mainly regarding semidefinite relaxation (SDR) and also a 2‐level optimisation procedure.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic‐based secrecy rate maximisation for MIMOME wiretap channels: Towards novel convexification procedures

Zamanipour¹

2017

Trans. Emerging Tel. Tech.

View full text Add to dashboard Cite

The paper first provides a general overview on the existing probabilistic‐driven methods aimed at convexifying the secrecy rate maximisation problem. Challenges and requirements of the procedures are fully taken into consideration for multiinput multioutput multiantenna eavesdropper wiretap channels. The problem constrained by an outage probability for the pure Ergodic capacity (perfect secrecy defined by Shannon) is analytically solved. Such analytical solution is performed robustly, something that originates principally from our imperfect statistical knowledge of the wiretap channel at the transmitter. Then, solely concentrating on McDiarmid inequality, we also extend our previous work to propose 2 new approaches. The bounds of our represented schemes are obviously accurate, tight, and achievable, something that effectively guarantee the system to overcome the probable challenges, eg, correlation in multiinput multioutput antenna arrays. Furthermore, the procedures are straightforwardly compared with each other from standpoint of complexity. Results are technically conducted to assure us about the proposed methods' merits, merely defining the significantly more favourable asymptotic bounds and the less resultant complexities. In particular, our proposed approaches sensibly outperform all the procedures, per se, something that can be accordingly assigned for other ergodic equilibria.

show abstract

Robust amplify‐and‐forward relay beamforming for security with mean square error constraint

Cited by 17 publications

References 27 publications

Improving secrecy for multi‐relay multi‐eavesdropper wireless systems through relay selection

Improving secrecy for multi‐relay multi‐eavesdropper wireless systems through relay selection

Robust Cooperative Relay Beamforming Design for Security

Probabilistic‐based secrecy rate maximisation for MIMOME wiretap channels: Towards novel convexification procedures

Contact Info

Product

Resources

About