Secure Beamforming Design for Physical Layer Network Coding Based MIMO Two-Way Relaying
IEEE Communications Letters 18(7): 1270-1273
Article 2014 English
Authors
KJ
Keeth Jayasinghe
PJ
Praneeth Jayasinghe
NR
Nandana Rajatheva
Abstract
1 min read
In this letter, we propose a secure beamforming scheme for physical layer network coding (PNC)-based multiple-input multiple-output (MIMO) two-way relaying system. The relay node performs PNC mapping. An eavesdropper is attempting to intercept the user information. The channel state information (CSI) of the user-to-eavesdropper channel is imperfect at the user nodes. A robust optimization problem is formulated to design beamforming vectors at the user nodes and relay. The problem is non-convex, and an algorithm is proposed to solve that. In the numerical analysis, we discuss the convergence of the proposed algorithm and the impact of the CSI error on the performance.
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