DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Kang, Joonhyuk | - |
dc.contributor.advisor | 강준혁 | - |
dc.contributor.author | Kim, Wankik | - |
dc.date.accessioned | 2019-09-04T02:40:00Z | - |
dc.date.available | 2019-09-04T02:40:00Z | - |
dc.date.issued | 2018 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=734198&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/266699 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 전기및전자공학부, 2018.2,[iii, 20 p. :] | - |
dc.description.abstract | We investigate the physical layer security for multiple-input single-output (MISO) multigroup multicast system in the presence of multiple eavesdroppers (Eves). To elaborate, we aim to tackle the secrecy rate maximization (SRM) problem of the multicast system by proposing an algorithm for secure beamforming. Here, we adopt the concept of artificial noise (AN) which is used for disturbing Eves by sending noise deliberately. Thus, we simultaneously design beamforming vectors and AN vector to maximize the secrecy rate of the system. We formulate the SRM problem in the form of non-convex max-min fair problem which is hard to solve due to its non-convexity. Therefore, in order to tackle this problem, we first reformulate this SRM problem to epigraph form, and we utilize the minorization maximization (MM) algorithm and rank-1 reduction technique. Numerical results show that our proposed algorithm improves the secrecy rate of given system model and outperforms the conventional algorithm for secure beamforming. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 물리 계층 보안▼a다중 그룹 멀티캐스트 시스템▼a보안 빔포밍▼a인공 잡음▼a보안 전송률 최대화▼aMM 알고리즘 | - |
dc.subject | Physical layer secrecy▼amultigroup multicast system▼asecure beamforming▼aartificial noise (AN)▼asecrecy rate maximization (SRM)▼aminorization maximization (MM) algorithm | - |
dc.title | Artificial noise-aided secure beamforming for multigroup multicast | - |
dc.title.alternative | 다중 그룹 멀티캐스트를 위한 인공 잡음 및 보안 빔포밍 설계 기법 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :전기및전자공학부, | - |
dc.contributor.alternativeauthor | 김완직 | - |
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