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Detail
Journal Article
Joint Beamforming and Jamming for Physical Layer Security
- Authors
- Jungho Myung, Hwanjo Heo, Jongdae Park
- Issue Date
- 2015-10
- Citation
- ETRI Journal, v.37, no.5, pp.898-905
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- 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.
- KSP Keywords
- Broadcast channel, Channel State Information(CSI), Maximum Ratio Transmission, Outage Probability, Physical layer Security(Physec), Probability constraint, Secrecy rate, Security Performance, base station, combined beamforming, design approach