UAV-Enabled Secure Communications: Joint Trajectory and Transmit Power Optimization

Zhou, Xiaobo; Wu, Qingqing; Yan, Shihao; Shu, Feng; Li, Jun

doi:10.1109/tvt.2019.2900157

Cited by 231 publications

(119 citation statements)

References 16 publications

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“…PLS for a single A2G channel was considered in [23]- [27]. The joint design of UAV trajectory/location and power optimization to maximize users' secrecy throughput was addressed in [23]- [31]. Specifically, multiple potential eavesdroppers on the ground were considered with imperfect position information in [23], while in [25], an UAV was employed as a mobile jammer to combat against eavesdropping.…”

Section: Introductionmentioning

confidence: 99%

“…To ensure secure communication, the authors in [28] optimized the UAV trajectory in such a way that would maximize the minimum secrecy throughput (among all users). In [24], [29]- [31], the authors used two UAVs in providing secure communication with one UAV delivering only information while the other sending only artificial noise to jam the EV(s). It is noteworthy that deploying a dynamic UAV or multiple stationary UAVs is too costly and thus not practical for secure communication.…”

Section: Introductionmentioning

confidence: 99%

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Secure UAV-Enabled Communication Using Han–Kobayashi Signaling

Sheng

Tuan

Nasir

et al. 2020

IEEE Trans. Wireless Commun.

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This paper proposes Han-Kobayashi signaling (HK-S), under which each pair of users decodes a common message to improve their throughput, for UAV-enabled multi-user communication. Given that only a single transmit antenna is used and thus there is no null space of users' channels for inserting an artificial noise that would effectively help to jam an eavesdropper without interfering the users' desired signals, a new information and artificial noise transfer scheme to address physical layer security (PLS) for the considered networks is investigated. Under this scheme, the UAV sends the confidential information to its users within a fraction of the time slot and sends the artificial noise within the remaining fraction. Accordingly, the problem of jointly optimizing the time-fraction, bandwidth and power allocation to maximize the users' worst secrecy throughput is formulated. New inner approximations are proposed for developing pathfollowing algorithms for its computation. Simulation shows that the proposed information and artificial noise transfer enables not only HKS but also orthogonal multi-access and nonorthogonal multi-access to provide PLS for UAV-enabled communication even when the eavesdropper is in the best channel condition. HKS outperforms the other two in terms of users' worst secrecy throughput.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Secure UAV-Enabled Communication Using Han–Kobayashi Signaling

Sheng

Tuan

Nasir

et al. 2020

IEEE Trans. Wireless Commun.

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“…To simplify the design in the sequel, we assume that the channel is modeled by pure LoS links as commonly adopted in the literature, e.g., [14], [15], [21], [22]. As the UAV communication channel is dominated by the LoS links 4 , the CSI between each node and each UAV can be determined by its location [21], [22], [23], [25], [26]. Besides, the desired ground node users perform handshaking with the system regularly such that accurate location information is available for resource allocation design.…”

Section: B Signal Modelmentioning

confidence: 99%

“…Furthermore, although deploying a single UAV in the system was demonstrated to offer some advantages for wireless communications [1], [24], the performance of single UAV communication systems can be unsatisfactory due to the stringent requirement on secure communication. Thus, with the assistance of a jammer UAV, the authors in [25], [26], [27] proposed a cooperative jamming scheme for secure UAV communications by jointly optimizing power allocation and trajectories. Yet, since the jammer UAV is only equipped with a single-antenna in these systems, the direction of artificial noise cannot be controlled properly which also causes strong interference to legitimate users due to the existence of strong LoS paths.…”

mentioning

confidence: 99%

Joint Trajectory and Resource Allocation Design for Energy-Efficient Secure UAV Communication Systems

Cai

Wei

et al. 2020

IEEE Trans. Commun.

206

125

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In this paper, we study the trajectory and resource allocation design for downlink energy-efficient secure unmanned aerial vehicle (UAV) communication systems, where an information UAV assisted by a multi-antenna jammer UAV serves multiple ground users in the existence of multiple ground eavesdroppers. The resource allocation strategy and the trajectory of the information UAV, and the jamming policy of the jammer UAV are jointly optimized for maximizing the system energy efficiency. The joint design is formulated as a non-convex optimization problem taking into account the quality of service (QoS) requirement, the security constraint, and the imperfect channel state information (CSI) of the eavesdroppers. The formulated problem is generally intractable. As a compromise approach, the problem is divided into two subproblems which facilitates the design of a low-complexity suboptimal algorithm based on alternating optimization approach. Simulation results illustrate that the proposed algorithm converges within a small number of iterations and demonstrate some interesting insights: (1) the introduction of a jammer UAV facilitates a highly flexible trajectory design of the information UAV which is critical to improving the system energy efficiency; (2) by exploiting the spatial degrees of freedom brought by the multi-antenna jammer UAV, our proposed design can focus the artificial noise on eavesdroppers offering a strong security mean to the system.

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“…Specially, DM can be directly applied to millimeter wave and UAV channels. This makes it have a potential to become a hot research topic in the coming future and will provide an This work was supported in part by the National Natural Science Foundation of China alternative secure solution for the future wireless networks, particularly beyond 5G and UAV networks [10].…”

Section: Introductionmentioning

confidence: 99%

Two Efficient Beamformers for Secure Precise Jamming and Communication With Phase Alignment

Shu

Zhu

Cai³

et al. 2020

IEEE Wireless Commun. Lett.

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To achieve a better effect of interference on eavesdropper with an enhanced security, a secure precise jamming (PJ) and communication (SPJC) is proposed and its basic idea is to force the transmit energy of artificial noise (AN) and confidential message into the neighborhoods of Eve and Bob by using random subcarrier selection (RSS), directional modulation, and beamforming under phase alignment (PA) constraint (PAC). Here, we propose two high-performance beamforming schemes: minimum transmit power (Min-TP) and minimum regularized transmit power (Min-RTP) to achieve SPJC under PAC and orthogonal constraint (OC), where OC means that AN and CM are projected onto the null-spaces of the desired and eavesdropping channels, respectively. Simulation results show that the proposed Min-TP and Min-RTP methods perform much better than existing equal amplitude (EA) method in terms of both bit-error-rate (BER) and secrecy rate (SR) at medium and high signal-to-noise ratio regions. The SR performance difference between the proposed two methods becomes trivial as the number of transmit antennas approaches large-scale. More importantly, we also find the fact that all three schemes including EA, Min-TP, and Min-RTP can form two main peaks of AN and CM around Eve and Bob, respectively. This achieves both PJ and secure precise wireless transmission (SPWT), called SPJC.Index Terms-Precise jamming, secure precise jamming and communication, phase alignment, secrecy rate, bit error rate.

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UAV-Enabled Secure Communications: Joint Trajectory and Transmit Power Optimization

Cited by 231 publications

References 16 publications

Secure UAV-Enabled Communication Using Han–Kobayashi Signaling

Secure UAV-Enabled Communication Using Han–Kobayashi Signaling

Joint Trajectory and Resource Allocation Design for Energy-Efficient Secure UAV Communication Systems

Two Efficient Beamformers for Secure Precise Jamming and Communication With Phase Alignment

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