Uncoordinated Cooperative Jamming with Phase Shift Beam Forming for Physical Layer Security
Minu Maria Joseph1, Nandan S2
1Minu Maria Joseph, Department of Electronics and Communication Engineering, Mar Baselios College of Engineering and Technology, Thiruvananthapuram (Kerala), India.
2Nandan S, Department of Electronics and Communication Engineering, Mar Baselios College of Engineering and Technology, Thiruvananthapuram (Kerala), India.
Manuscript received on 15 June 2015 | Revised Manuscript received on 25 June 2015 | Manuscript Published on 30 June 2015 | PP: 187-190 | Volume-4 Issue-5, June 2015 | Retrieval Number: E4124064515/15©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Wireless networks are widely popular because of its broadcast nature, which makes it easily accessible. This ease of accessibility also makes it vulnerable to eavesdropping, thus raising security concerns. An information-theoretic viewpoint has found conditions for reliable and secure communication and overcomes the disadvantages of traditional cryptographic techniques. One method that ensures such perfect secrecy is by cooperative jamming. The jamming signal is such that it degrades the eavesdropper’s channel without affecting the channel of the legitimate receiver, thus ensuring security in communication. An uncoordinated jamming approach such as local nulling does not require any public information and makes use of only the helper-receiver channel information. This paper proposes a scheme which is a hybrid combination of local nulling and phase shuft beamforming such that the secrecy rate achievable with local nulling is maximized.
Keywords: Beam Forming, Physical Layer Security, Secrecy Rate, Uncoordinated Cooperative Jamming.
Scope of the Article: WSN