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Information Journal Paper

Title

Distance-Aware Beamforming for Multiuser Secure Communication Systems

Pages

  97-106

Abstract

 Typical cryptography schemes are not well suited for low complexity types of equipment, e. g. Internet of things (IoT) devices, as they may need high power or impose high computational complexity. Physical (PHY) layer security techniques such as Beamforming (in multiple antennas systems) are possible alternatives to provide security for such applications. In this paper, we consider a network with multiple groups of users as receivers and a transmitter that intends to send different messages to each group. There are also some eavesdroppers (Eavs) at known locations of the environment. The goal of this paper is to find the Beamforming vectors that minimize the total transmitting power while keeping the signal level above a threshold at the exact locations of the legitimate receivers (both angle and range) and keeping it less than another threshold at eavesdropping points. We use frequency diverse Arrays (FDA) at the transmitter; thus, the transmitter also needs to determine the frequency that each antenna element must use for data transmission. This condition makes the problem non-convex and so we propose an approximate solution for solving this Optimization problem. Simulation results show the performance of the scheme in a particular network setting.

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    APA: Copy

    Ravansalar, Nasrin, & Pourahmadi, Vahid. (2020). Distance-Aware Beamforming for Multiuser Secure Communication Systems. AUT JOURNAL OF ELECTRICAL ENGINEERING, 52(1), 97-106. SID. https://sid.ir/paper/973219/en

    Vancouver: Copy

    Ravansalar Nasrin, Pourahmadi Vahid. Distance-Aware Beamforming for Multiuser Secure Communication Systems. AUT JOURNAL OF ELECTRICAL ENGINEERING[Internet]. 2020;52(1):97-106. Available from: https://sid.ir/paper/973219/en

    IEEE: Copy

    Nasrin Ravansalar, and Vahid Pourahmadi, “Distance-Aware Beamforming for Multiuser Secure Communication Systems,” AUT JOURNAL OF ELECTRICAL ENGINEERING, vol. 52, no. 1, pp. 97–106, 2020, [Online]. Available: https://sid.ir/paper/973219/en

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