RIS-Aided Physical Layer Security With Full-Duplex Jamming in Underlay D2D Networks

Abstract

This paper investigates the physical layer security and data transmission for the underlay device-to-device (D2D) networks, and considers a combination of the reconfigurable intelligent surface (RIS) and full-duplex (FD) jamming receiver for the robustness and security enhancements of the system. In the demonstrated spectrum sharing setup, the total power of the D2D networks is conceived to the transmitter and receiver to transmit a private message and emit the artificial noise (AN) signals. To prevent information leakage, a beamforming design is presented for a multi-antenna FD D2D receiver in order to suppress and inject the AN signals in the direction of legitimate users and eavesdropper, respectively. The statistical characterization of end-to-end RIS-assisted wireless channels is presented, and the achievable ergodic secrecy rate of the system is derived in novel approximate expressions. The numerical and simulation results confirm the accuracy and effectiveness of the proposed analytical framework. The results demonstrate an optimal selection of the D2D power allocations for different number of reflecting elements in terms of achievable ergodic secrecy rates of the system. INDEX TERMS Underlay D2D networks, reconfigurable intelligent surface, full-duplex jamming, ergodic secrecy rates.

Sum-Rate Optimization for IRS-Aided D2D Communication Underlaying Cellular Networks

“…2) IRS-AIDED COMMUNICATION SYSTEM Motivated by the advantages of the IRS, researchers introduce IRS into all kinds of settings [9,[19][20][21]. Authors in [9] integrate the IRS into unmanned aerial vehicle (UAV) communication and improve the sum-rate of the single antenna UAV system.…”

“…In addition to applications in single antenna systems, IRS can be used to enhance the performance of multi-antenna systems such as MIMO [20]. What's more, IRS can be designed to improve the capacity in short-range scenarios, such as D2D and cell-free massive MIMO systems [21]. It is unnecessary to introduce reflected equipment to forward useful signals for a D2D pair when the direct path between a D2D transmitter and a D2D receiver is available.…”

Reconfigurable Intelligent Surface Aided Multi-User Communications: State-of-the-Art Techniques and Open Issues

“…Recently, AN or jamming has been introduced into new RIS-aided network setups. The authors in [87], examined the integration of RIS and full-duplex jamming receivers in underlay device-to-device (D2D) systems. The authors derived novel approximate expressions of the proposed system achievable ergodic SR.…”

Power Optimization of IRS-Assisted D2D System Based on Imperfect Channel

“…The authors of [11] explored the block coordinate descent method to optimize delays in IRS-assisted MEC systems. The authors of [16] studied the physical layer security and data transmission of IRS-assisted D2D networks. The authors of [17] studied the IRS-assisted D2D wireless communication system, using IRS to regulate its reflecting components to enhance the data transmission of D2D communication.…”

“…The literature [10][11][12][13][14][15][16][17][18] mentioned above did not consider the influence of imperfect CSI on transmission design. Because of the inevitable channel estimation errors, simply treating channels as perfect ones in the analysis process will lead to the loss of system performance.…”