Robust and Secure Communications in Intelligent Reflecting Surface Assisted NOMA Networks

@article{Zhang2020RobustAS,
  title={Robust and Secure Communications in Intelligent Reflecting Surface Assisted NOMA Networks},
  author={Zheng Zhang and Lu Lv and Qingqing Wu and Hao Deng and Jian Chen},
  journal={IEEE Communications Letters},
  year={2020},
  volume={25},
  pages={739-743}
}
This letter investigates secure transmission in an intelligent reflecting surface (IRS) assisted non-orthogonal multiple access (NOMA) network. Consider a practical eavesdropping scenario with imperfect channel state information of the eavesdropper, we propose a robust beamforming scheme using artificial noise to guarantee secure NOMA transmission with the IRS. A joint transmit beamforming and IRS phase shift optimization problem is formulated to minimize the transmit power. Since the problem… 
View on IEEE
arxiv.org
50 Citations
Highly Influential Citations
1
Background Citations
23
Methods Citations
22

Figures from this paper

50 Citations

Securing NOMA Networks by Exploiting Intelligent Reflecting Surface

This paper investigates the security enhancement of an intelligent reflecting surface (IRS) assisted non-orthogonal multiple access (NOMA) network, where a base station (BS) serves users securely…

Simultaneous Information Relaying and Jamming via IRS to Secure NOMA Networks

Simulation results demonstrate the secrecy enhancement of the proposed SIRJ scheme over existing baseline schemes in terms of achieving a higher MSR.

Enhancing Security of NOMA Networks via Distributed Intelligent Reflecting Surfaces

This paper investigates the security enhancement of an intelligent reflecting surface (IRS) assisted non-orthogonal multiple access (NOMA) network, where a distributed IRS enabled NOMA transmission…

IRS-Aided Secure MISO-NOMA Networks Towards Internal and External Eavesdropping

Simulation results demonstrate the superiority of the proposed IRS-aided secure scheme for NOMA networks against both internal and external eavesdrop-ping by combining IRS and AJ against the challenging external eavesdropping.

Intelligent Reflecting Surface Aided Secure Communications for NOMA Networks

This paper analyzes the physical layer security of a downlink non-orthogonal multiple access (NOMA) network through an IRS intended for assisting the wireless transmission, taking into account the external and internal eavesdropping scenarios.

Rate-Splitting Multiple Access for Intelligent Reflecting Surface-Aided Secure Transmission

A rate-splitting multiple access (RSMA)-based intelligent reflecting surface (IRS)-aided multi-user multiple-input single-output (MISO) secure communication system with a potential eavesdropper with results demonstrating that the proposed design can significantly improve the max-min SR over the benchmark schemes without IRS or adopting other multiple access techniques.

IRS-Aided Secure NOMA Networks Against Internal and External Eavesdropping

Simulation results demonstrate the superiority of the proposed IRS-aided schemes against the challenging internal and external eavesdropping by combining IRS and NOMA.

Robust Secure Design for RIS-aided NOMA Network against Internal Near-End Eavesdropping

A scheme of artificial noise (AN) cooperative jamming and beamforming design is proposed against internal eavesdropper for RIS-aided NOMA and it is proved theoretically that the positive secrecy rate can be guaranteed if providing sufficient power.

On the Secrecy Design of STAR-RIS Assisted Uplink NOMA Networks

This paper investigates the secure transmission in a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted uplink non-orthogonal multiple access system,…

Secure Transmission via IUI Engineering for IRS-Assisted NOMA Systems

This letter aims to reduce the signal-to-interference-plus-noise ratio (SINR) of the passive eavesdropper to deteriorate eavesdropping by maximizing the transmit power of weaker users and modifying the successive interference cancelation (SIC) order.

References

SHOWING 1-10 OF 19 REFERENCES

Intelligent Reflecting Surface Aided Multi-Antenna Secure Transmission

This letter presents a power efficient scheme to design the secure transmit power allocation and the surface reflecting phase shift and proposes an alternative optimization algorithm and the semidefinite programming (SDP) relaxation to deal with this issue.

Secrecy Rate Maximization for Intelligent Reflecting Surface Assisted Multi-Antenna Communications

An efficient alternating algorithm is developed where the solutions to the transmit covariance of the source and the phase shift matrix of the IRS are achieved in closed form and semi-closed form, respectively.

Robust and Secure Wireless Communications via Intelligent Reflecting Surfaces

Simulation results show that IRSs can significantly improve the system secrecy performance compared to conventional architectures without IRS, and unveil that, for physical layer security, uniformly distributing the reflecting elements among multiple IRSs is preferable over deploying them at a single IRS.

Intelligent Reflecting Surface Assisted Secrecy Communication: Is Artificial Noise Helpful or Not?

Simulation results show that incorporating AN in transmit beamforming is beneficial under the new setup with IRS reflect beamforming, and it is unveiled that the IRS-aided design without AN even performs worse than the AN-aiding design without IRS as the number of eavesdroppers near the IRS increases.

Exploiting Intelligent Reflecting Surfaces in Multi-Antenna Aided NOMA Systems.

This paper investigates a downlink multiple-input single-output intelligent reflecting surface (IRS) non-orthogonal multiple access (NOMA) system, where a base station (BS) serves multiple users with the aid of IRSs, and proposes efficient algorithms, which design the active beamforming and passive beamforming alternately.

Intelligent Reflecting Surface-Assisted Multiple Access With User Pairing: NOMA or OMA?

This letter analyzes the minimum transmit powers required by different multiple access schemes and compares them numerically, which turn out to not fully comply with the stereotyped superiority of NOMA over OMA in conventional systems without IRS, and proposes a low-complexity solution to achieve near-optimal performance.

A Simple Design of IRS-NOMA Transmission

This letter proposes a simple design of intelligent reflecting surface (IRS) assisted non-orthogonal multiple access (NOMA) downlink transmission, where conventional spatial division multiple access is used first at the base station and IRS-assisted NOMA is used to ensure that additional cell-edge users can also be served on these beams.

Intelligent Reflecting Surface-Enhanced OFDM: Channel Estimation and Reflection Optimization

A practical transmission protocol to execute channel estimation and reflection optimization successively for an IRS-enhanced orthogonal frequency division multiplexing (OFDM) system is proposed.

Intelligent Reflecting Surface Assisted Multi-User OFDMA: Channel Estimation and Training Design

Two efficient channel estimation schemes for different channel setups in an IRS-assisted multi-user broadband communication system employing the orthogonal frequency division multiple access (OFDMA) are proposed and the fundamental limits on the minimum training overhead and the maximum number of supportable users are derived.

Towards Smart and Reconfigurable Environment: Intelligent Reflecting Surface Aided Wireless Network

This article addresses the key challenges in designing and implementing the new IRS-aided hybrid (with both active and passive components) wireless network, as compared to the traditional network comprising active components only.