Secure Transmission in Downlink Cellular Network with a Cooperative Jammer

Author

Seongah Jeong ; Keonkook Lee ; Heon Huh ; Joonhyuk Kang

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea

Volume

2

Issue

4

fYear

2013

fDate

Aug-13

Firstpage

463

Lastpage

466

Abstract

In this paper, a novel transmission scheme is proposed to improve the security of downlink cellular network. The confidential message intended to one of K mobile users (MUs) should be securely kept from the undesired recipients. In this work, the K-1 remaining users are regarded as potential eavesdroppers and called as internal eavesdroppers. For the security enhancement, we propose an adaptation of a single cooperative jammer (CJ) to increase the ambiguity at all malicious users by distracting them with artificial interference. With the help of CJ, we derive the optimal joint transmission scheme by beamforming solution to maximize the secrecy rate of the intended user. Numerical results show the performance improvement of the proposed scheme.

Keywords

array signal processing; cellular radio; cooperative communication; jamming; radio links; telecommunication security; CJ; MU; artificial interference; beamforming solution; confidential message; cooperative jammer; downlink cellular network; internal eavesdropper; malicious user; mobile user; network security; optimal joint transmission scheme; secrecy rate; secure transmission; security enhancement; Physical layer security; beamforming; cooperative jammer; downlink cellular network;

fLanguage

English

Journal_Title

Wireless Communications Letters, IEEE

Publisher

ieee

ISSN

2162-2337

Type

jour

DOI

10.1109/WCL.2013.052813.130272

Filename

6523046