NDLI: Joint Decode-and-Forward and Cooperative Jamming for Secure Wireless Communications

Content Provider	IEEE Xplore Digital Library
Author	Shuanglin Huang Jiaolong Wei Yang Cao Cai Liu
Copyright Year	2011
Abstract	In a cooperative wireless network, we exploited node cooperation for achieving physical layer based security. In this paper, the case of one source-destination pair with the help of multiple cooperating nodes(relay nodes and jamming nodes) in the presence of one eavesdropper was considered to improve the performance of secure wireless communications. A novel cooperative scheme joint decode-and-forward and cooperative jamming(JDFCJ) was proposed. In this scheme, the relay nodes transmit a weighted version of the source signals and the jamming nodes just transmit a common weighted jamming signal to confound the eavesdropper. The novel system design is proposed to minimize the transmit power subject to a secrecy rate constraint. For JDFCJ, the optimal power allocation is obtained in closed-form in the condition of the complete nulling of jamming signals at the destination. The numerical evaluation of the transmit power results shows that the proposed scheme can significantly improve the performance of secure wireless communications, as compared to the DF scheme.
Starting Page	1
Ending Page	4
File Size	182089
Page Count	4
File Format	PDF
ISBN	9781424462506
ISSN	21619654
e-ISBN	9781424462520
DOI	10.1109/wicom.2011.6040145
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Noise Security Communication system security Jamming Relays Joints
Content Type	Text
Resource Type	Article

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