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… 

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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.

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.

Secure MISO-NOMA Transmission With Artificial Noise

  • Lu LvZ. DingQ. NiJian Chen
  • Computer Science
    IEEE Transactions on Vehicular Technology
  • 2018
This correspondence studies a new secrecy beamforming (SBF) scheme for multiple-input single-output non-orthogonal multiple access (MISO-NOMA) systems and derives a closed-form expression for the secrecy outage probability to characterize the secrecy performance.

Exploiting Intelligent Reflecting Surfaces in NOMA Networks: Joint Beamforming Optimization

Numerical results illustrate that: i) the system sum rate can be significantly improved by deploying the IRS with the proposed algorithms; ii) 3-bit phase shifters are capable of achieving almost the same performance as the ideal IRS; and iii) the proposed IRS-aided NOMA systems achieve higher systemSum rate than the IRS- aided orthogonal multiple access system.

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 Enhanced Wireless Network via Joint Active and Passive Beamforming

Simulation results demonstrate that an IRS-aided single-cell wireless system can achieve the same rate performance as a benchmark massive MIMO system without using IRS, but with significantly reduced active antennas/RF chains.

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.