AN-aided robust secure beamforming design in MIMO two-way relay systems with PNC | IEEE Conference Publication | IEEE Xplore

AN-aided robust secure beamforming design in MIMO two-way relay systems with PNC


Abstract:

This paper investigates the artificial noise (AN)-aided robust secure beamforming design for multiple-input multiple-output (MIMO) two-way relaying (TWR) systems based on...Show More

Abstract:

This paper investigates the artificial noise (AN)-aided robust secure beamforming design for multiple-input multiple-output (MIMO) two-way relaying (TWR) systems based on physical layer network coding (PNC). In terms of signal-to-interference-and-noise ratio (SINR), we propose two robust beamforming designs to optimize worst-case secrecy sum rate in the presence of an eavesdropper, where the eavesdropper's channel state information (ECSI) is imperfect. In low SINR regime, we give a robust joint beamforming design. Since the optimization problem is non-convex, we use a zero-forcing (ZF) constraint on AN beamforming, and after approximating the objective function, the non-convex problem is formulated into a semidefinite programming (SDP). On the other hand, in high SINR regime, we provide a quality-of-service (QoS)-based robust beamforming design, in which the optimal solution can be efficiently obtained by employing an iterative algorithm based on Taylor expansion and semidefinite relaxation (SDR) techniques. Numerical results show the efficiency of the proposed schemes.
Date of Conference: 15-18 April 2018
Date Added to IEEE Xplore: 11 June 2018
ISBN Information:
Electronic ISSN: 1558-2612
Conference Location: Barcelona, Spain

References

References is not available for this document.