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학술지 Joint Beamforming and Jamming for Physical Layer Security
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저자
명정호, 허환조, 박종대
발행일
201510
출처
ETRI Journal, v.37 no.5, pp.898-905
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.15.2415.0002
협약과제
15MI1800, SDN 기반 동적 네트워크 은닉 핵심 기술 개발, 박종대
초록
In this paper, we consider a joint beamforming and jamming design to enhance physical layer security against potential multiple eavesdroppers in a multiple-input and single-output cellular broadcast channel. With perfect channel state information at the base station, we propose various design approaches to improve the secrecy of the target user. Among the proposed approaches, the combined beamforming of maximum ratio transmission and zero-forcing transmission with a combination of maximum ratio jamming and zero-forcing jamming (MRT + ZFT with MRJ + ZFJ) shows the best security performance because it utilizes the full transmit antenna dimensions for beamforming and jamming with an efficient power allocation. The simulation results show that the secrecy rate of this particular proposed approach is better than the rates of the considered conventional approaches with quality-of-service and outage probability constraints.
키워드
Beamforming, Jamming, Physical layer security
KSP 제안 키워드
Broadcast Channel, Channel State Information(CSI), Maximum Ratio Transmission, Outage probability(OP), Physical layer Security(Physec), Probability constraint, Secrecy rate, Security Performance, Zero forcing(ZF), base station(BS), combined beamforming