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다중 셀 환경에서 공간 상관 기반 고유 안테나 선택 기법 연구 = Spatial correlation based eigen antenna selection scheme in multi-cell environments
한글로보기https://www.riss.kr/link?id=T12081058
- 저자
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발행사항
서울 : 서울대학교 대학원, 2010
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학위논문사항
학위논문(석사) -- 서울대학교 대학원 , 전기. 컴퓨터공학부 , 2010. 2
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발행연도
2010
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작성언어
한국어
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주제어
공간 상관 ; 고유 안테나 선택 ; 간섭 조정 ; In multi-cell environments ; signal power degradation due to path loss effect and interference power increment due to other cell interference (OCI) make the performance of a user near the cell boundary decrease. A lot of researches have been worked to improve the signal power with the multi-antenna transmission technique or to reduce OCI with interference coordination (IC). However ; conventional schemes do not consider these problems simultaneously ; so the improvement of system throughput is restricted. In this thesis ; we propose a novel IC scheme with the use of antenna selection for reducing OCI as well as improving the signal power of the serving user. By considering exchange delay and signaling overhead problems ; adjacent cells share long-term channel information such as spatial correlation matrix. The proposed scheme selects antennas for IC by considering not only the effect of interference reduction due to the decreased number of antennas of the adjacent cell ; but also the effect of signal power improvement due to the increased number of antennas of the serving cell. To optimize the system throughput ; each base station decides the number of antennas by sharing spatial correlation matrices and average signal power information of serving cell and adjacent cell. In addition ; transmit beamfoming and space-time block coding are applied to the proposed IC scheme according to variation of users’ channel state and mobility. Simulation results show that the proposed scheme is quite effective near the cell boundary
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DDC
621.3 판사항(20)
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발행국(도시)
서울
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형태사항
ⅴ, 43 장 : 삽화 ; 26 cm
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일반주기명
참고문헌 수록
- DOI식별코드
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소장기관
- 서울대학교 중앙도서관
- 서울대학교 중앙도서관
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