Secure transmission in downlink cellular network with a Cooperative Jammer

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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.
Publisher
IEEE Communications Society
Issue Date
2013-08
Language
English
Article Type
Article
Citation

IEEE Wireless Communications Letters, v.2, no.4, pp.463 - 466

ISSN
2162-2337
DOI
10.1109/WCL.2013.052813.130272
URI
http://hdl.handle.net/10203/187442
Appears in Collection
ME-Journal Papers(저널논문)EE-Journal Papers(저널논문)
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