DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 최준일 | - |
dc.contributor.author | Noh, Taegyun | - |
dc.contributor.author | 노태균 | - |
dc.date.accessioned | 2024-07-25T19:30:21Z | - |
dc.date.available | 2024-07-25T19:30:21Z | - |
dc.date.issued | 2022 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1044821&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/320421 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 전기및전자공학부, 2022.8,[v, 77 p. :] | - |
dc.description.abstract | Cell-free massive multiple-input multiple-output (MIMO) and intelligent reflecting surface (IRS) are considered as the prospective multiple antenna technologies for beyond the fifth-generation (5G) networks. IRS-aided cell-free MIMO systems, combining both technologies, can further improve the performance of cell-free MIMO systems at low cost and energy consumption. Prior works on IRS-aided cell-free MIMO systems focused on instantaneous performance metrics and relied on alternating optimization algorithms, which impose huge signal processing complexity and fronthaul signaling overhead. To address these challenges for cell-free MIMO with multiple IRSs, we propose a novel non-iterative two-step algorithm that provides the long-term passive beamformers at the IRSs and short-term active precoders and long-term power allocation at the access points (APs) to maximize the minimum average rate. Specifically, the long-term passive beamformers are derived based on statistical channel state information (S-CSI) to reduce the computational complexity and signaling overhead. Simulation results verify that the proposed scheme outperforms benchmark schemes and brings a significant performance gain to the IRS-aided cell-free MIMO systems. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 지능형 반사표면▼a셀-탈피▼a합동 빔형성▼a통계적 채널 상태 정보 | - |
dc.subject | Intelligent reflecting surface▼aCell-free▼aJoint beamforming▼aStatistical channel state information | - |
dc.title | IRS-aided cell-free MIMO systems | - |
dc.title.alternative | 지능형 반사표면의 도움을 받는 셀-탈피 다중안테나 시스템 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :전기및전자공학부, | - |
dc.contributor.alternativeauthor | Choi, Junil | - |
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