Adaptive cooperation schemes for energy efficient physical layer security

IEEE Commun. Surv. Tutorials

Bai

Zhao

et al. 2019

179

102

Due to the malicious attacks in wireless networks, physical layer security has attracted increasing concerns from both academia and industry. The research on physical layer security mainly focuses either on the secrecy capacity/achievable secrecy rate/capacity-equivocation region from the perspective of information theory, or on the security designs from the viewpoints of optimization and signal processing. Because of its importance in security designs, the latter research direction is surveyed in a comprehensive way in this paper. The survey begins with typical wiretap channel models to cover common scenarios and systems. The topics on physical-layer security designs are then summarized from resource allocation, beamforming/precoding, and antenna/node selection and cooperation. Based on the aforementioned schemes, the performance metrics and fundamental optimization problems are discussed, which are generally adopted in security designs. Thereafter, the state of the art of optimization approaches on each research topic of physical layer security is reviewed from four categories of optimization problems, such as secrecy rate maximization, secrecy outrage probability minimization, power consumption minimization, and secure energy efficiency maximization. Furthermore, the impacts of channel state information on optimization and design are discussed. Finally, the survey concludes with the observations on potential future directions and open challenges.

Section: ) Maximization Of Secure Eementioning

confidence: 99%

A Survey of Optimization Approaches for Wireless Physical Layer Security

IEEE Commun. Surv. Tutorials

Bai

Zhao

et al. 2019

179

102

“…D2D underlay links [5, 6] can also share other cellular user equipment (CUE) channels through interference management to further improve network spectrum efficiency. With respect to energy efficiency [7], shorter distance D2D communications allow DUEs to expend significantly less transmission power than in cellular mode. Furthermore, D2D communications can substantially reduce latency in local content (file) sharing and social media interaction [8, 9].…”

Section: Introductionmentioning

confidence: 99%

Device-to-Device Users Clustering Based on Physical and Social Characteristics

International Journal of Distributed Sensor Networks

Araniti

Cao

et al. 2015

Self Cite

This paper proposes a novel method for device-to-device (D2D) user clustering that allows wireless users in proximity to share common resources to save both system bandwidth and energy resources. The idea at the basis of our proposed cluster formation is to incorporate both social interactions and physical relationships among D2D terminals. Towards this goal, we propose two clustering approaches. The first one is based on the Chinese restaurant process (CRP), whereas the second one enhances the traditional CRP by defining a “distance-dependent Chinese restaurant process” (namely, DCRP). Numerical simulation results demonstrate superiority of our proposed clustering schemes in terms of system throughput, energy consumption, and energy efficiency over the existing schemes that rely only on physical distance.

“…The mecha nism presented in [11] investigated the improvement of secrecy rate for cellular users by taking DUEs as friendly jammers, and [12] discussed D2D oriented secrecy performance generally in terms of clusters. In traditional cooperative relay networks, cooperative jamming (CJ) [13] [14] [15] [16] has been widely used to combat interception, and it was proven to have the potential to improve achievable secrecy rate. Most of the works simply and ideally assumed that the selected jammer will work well with the allocated power.…”

Section: Introductionmentioning

confidence: 99%

Secrecy-oriented partner selection based on social trust in device-to-device communications

2015 IEEE International Conference on Communications (ICC)

Liu

et al. 2015

Self Cite

Device-to-device (D2D) communications recently have attracted broad attention owing to its potential ability to improve spectrum and energy efficiency within the existing cellular infrastructure. Lacking sophisticated control, D2D user equipments (DUEs) themselves are not powerful enough to resist eavesdropping or fight against security attacks. This work investigates selection of jamming partners for D2D users to thwart reception by social outcasts in D2D overlay, by exploiting social relationship to improve secrecy rate. We aim to maximize the secrecy rate of worst case, eavesdropping by any outcast, through selecting jammer node while allocating transmit power for both source and jammer. We present a heuristic genetic algorithm based solution to evaluate the problem directly. In addition, we also propose approximated optimization solutions by considering power allocation of upper and lower bounds to simplify the problem, by leveraging the fractional programming (GFP) oriented Dinkelbach-type algorithm. Numerical resultsshow that the proposed schemes can achieve better performance through finding an appropriate partner.Index Terms-D2D communications, cooperative jamming, social outcast, secrecy rate, power allocation.