A Full-Duplex Bob in the MIMO Gaussian Wiretap Channel: Scheme and Performance

Li, Lingxiang; Chen, Zhi; Zhang, Duo; Fang, Jun

doi:10.1109/lsp.2015.2504396

Cited by 65 publications

(39 citation statements)

References 18 publications

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“…The secrecy rate (SR) optimization was studied in both cases of known and unknown channel state information (CSI) of the Eve. The work in [20] considered a MIMO Gaussian wiretap channel with an FD jamming receiver to secure the DoF. The authors in [21] extended the prior work to a multiuser scenario, where the transmitter is equipped with multiple antennas to guarantee the individual SR for multiple users.…”

Section: A Related Workmentioning

confidence: 99%

“…Practical Implementations: The first step of Algorithm 1 requires a feasible point (X (0) , α (0) , µ (0) ) of (17) to successfully initialize the computational procedure, which is difficult to find in general. To circumvent this problem, initialized by any feasible (X (0) , α (0) ) to the convex constraints {(9e), (14), (17e), (20), (24), (26), (29), (39)}, the following convex Algorithm 1: Proposed Path-Following Algorithm to Solve SRM-EWCI (9) Initialization: Set κ := 0 and solve (41) to generate an initial feasible point (X (0) , α (0) , µ (0) ). 1: repeat 2: Solve (40) to obtain the optimal solution (X ⋆ , η ⋆ , Γ ⋆ , α ⋆ , µ ⋆ ).…”

Section: Approximation Of Constraintsmentioning

confidence: 99%

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A New Design Paradigm for Secure Full-Duplex Multiuser Systems

Nguyen

Dobre

et al. 2018

IEEE J. Select. Areas Commun.

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We consider a full-duplex (FD) multiuser system where an FD base station (BS) is designed to simultaneously serve both downlink (DL) and uplink (UL) users in the presence of half-duplex eavesdroppers (Eves). The problem is to maximize the minimum (max-min) secrecy rate (SR) among all legitimate users, where the information signals at the FD-BS are accompanied with artificial noise to debilitate the Eves' channels. To enhance the max-min SR, a major part of the power budget should be allocated to serve the users with poor channel qualities, such as those far from the FD-BS, undermining the SR for other users, and thus compromising the SR per-user. In addition, the main obstacle in designing an FD system is due to the selfinterference (SI) and co-channel interference (CCI) among users. We therefore propose an alternative solution, where the FD-BS uses a fraction of the time block to serve near DL users and far UL users, and the remaining fractional time to serve other users. The proposed scheme mitigates the harmful effects of SI, CCI and multiuser interference, and provides system robustness. The SR optimization problem has a highly nonconcave and nonsmooth objective, subject to nonconvex constraints. For the case of perfect channel state information (CSI), we develop a low-complexity path-following algorithm, which involves only a simple convex program of moderate dimension at each iteration. We show that our path-following algorithm guarantees convergence at least to a local optimum. Then, we extend the path-following algorithm to the cases of partially known Eves' CSI, where only statistics of CSI for the Eves are known, and worst-case scenario in which Eves can employ a more advanced linear decoder. The merit of our proposed approach is further demonstrated by extensive numerical results.

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Section: A Related Workmentioning

confidence: 99%

Section: Approximation Of Constraintsmentioning

confidence: 99%

A New Design Paradigm for Secure Full-Duplex Multiuser Systems

Nguyen

Dobre

et al. 2018

IEEE J. Select. Areas Commun.

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“…, X ∈ {a, b} and P A,max , P B,max ∈ R + represent the maximum transmit power of Alice and Bob. It is observed that the optimization problem in (33) holds a similar mathematical structure in relation to the transmit covariance matrices, i.e., X (n) X , W (n) X , X ∈ {a, b}, ∀n ∈ N as addressed for (12). Hence a similar procedure as in the Algorithm 1 following the result of the Lemma III.1 and III.2 is employed to obtain an optimal solution.…”

Section: A Bidirectional Sum Secrecy Rate Maximizationmentioning

confidence: 99%

Sum secrecy rate maximization for multi-carrier MIMOME systems with full-duplex jamming

Yang

Taghizadeh

Mathar

2019

Physical Communication

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“…One can check that the SDR-based MM approach developed in this paper is still applicable by setting κ A = κ B = 0, removing the zero-forcing constraint (12c), lifting the variable dimension of W and Q from (N −r)×(N −r) to N ×N and modifying Eve's sum rate accordingly. 3 Fig. 4 shows the result, where "FD" and "HD" correspond to the full-duplex and half duplex-based designs, resp.…”

Section: A the Case Of No Energy Harvesting With Evementioning

confidence: 99%

Sum Secrecy Rate Maximization for Full-Duplex Two-Way Relay Networks Using Alamouti-Based Rank-Two Beamforming

Han

2016

IEEE J. Sel. Top. Signal Process.

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Consider a two-way communication scenario where two single-antenna nodes, operating under full-duplex mode, exchange information to one another through the aid of a (full-duplex) multi-antenna relay, and there is another singleantenna node who intends to eavesdrop. The relay employs artificial noise (AN) to interfere the eavesdropper's channel, and amplify-forward (AF) Alamouti-based rank-two beamforming to establish the two-way communication links of the legitimate nodes. Our problem is to optimize the rank-two beamformer and AN covariance for sum secrecy rate maximization (SSRM). This SSRM problem is nonconvex, and we develop an efficient solution approach using semidefinite relaxation (SDR) and minorization-maximization (MM). We prove that SDR is tight for the SSRM problem and thus introduces no loss. Also, we consider an inexact MM method where an approximately but computationally cheap MM solution update is used in place of the exact update in conventional MM. We show that this inexact MM method guarantees convergence to a stationary solution to the SSRM problem. The effectiveness of our proposed approach is further demonstrated by an energy-harvesting scenario extension, and by extensive simulation results.Index terms− Physical-layer security, full-duplex relay, minorization-maximization, semidefinite relaxation.

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A Full-Duplex Bob in the MIMO Gaussian Wiretap Channel: Scheme and Performance

Cited by 65 publications

References 18 publications

A New Design Paradigm for Secure Full-Duplex Multiuser Systems

A New Design Paradigm for Secure Full-Duplex Multiuser Systems

Sum secrecy rate maximization for multi-carrier MIMOME systems with full-duplex jamming

Sum Secrecy Rate Maximization for Full-Duplex Two-Way Relay Networks Using Alamouti-Based Rank-Two Beamforming

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