Secure Beamforming Design for Physical Layer Network Coding Based MIMO Two-Way Relaying

Author

Jayasinghe, Keeth ; Jayasinghe, Praneeth ; Rajatheva, Nandana ; Latva-aho, Matti

Author_Institution

Dept. of Commun. Eng., Univ. of Oulu, Oulu, Finland

Volume

18

Issue

7

fYear

2014

fDate

Jul-14

Firstpage

1270

Lastpage

1273

Abstract

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.

Keywords

MIMO communication; array signal processing; network coding; numerical analysis; relay networks (telecommunication); telecommunication security; MIMO two-way relaying; channel state information; multiple-input multiple-output two-way relaying system; numerical analysis; physical layer network coding; secure beamforming design; user-to-eavesdropper channel; Array signal processing; Network coding; Optimization; Physical layer; Relays; Signal to noise ratio; Vectors; Multiple-input multiple-output; physical layer network coding; physical layer security;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2014.2325861

Filename

6819004