LTE 기반 MU-MIMO 시스템에 구현한 빔포밍 알고리즘Implementation of a beamforming for LTE-based MU-MIMO system
- Other Titles
- Implementation of a beamforming for LTE-based MU-MIMO system
- Authors
- 한연규; 양현욱; 김경훈; 최승원
- Issue Date
- Dec-2012
- Publisher
- (사)디지털산업정보학회
- Keywords
- Beamforming; Zero-Forcing; Lagrange; Array Antenna; MU-MIMO
- Citation
- (사)디지털산업정보학회 논문지, v.8, no.4, pp.121 - 127
- Indexed
- KCI
OTHER
- Journal Title
- (사)디지털산업정보학회 논문지
- Volume
- 8
- Number
- 4
- Start Page
- 121
- End Page
- 127
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/163967
- ISSN
- 1738-6667
- Abstract
- In this paper, we propose a new beamforming method which is used in Multiple User-Multiple Input Multiple Output (MU-MIMO) system. An experimental system consists of LTE based TDD base-station which has 2 MIMO elements each of which contains 10-array antennas and 2 mobile terminals each of which has a single antenna. We demonstrate that the Multiple Access Interference can further be reduced by appending a beamforming procedure in MU-MIMO system in which various users share a given channel resource. The proposed algorithm is the ordinary Lagrange beamforming algorithm combined with Zero-Forcing. It is demonstrated that the proposed beamforming method outperforms a conventional method which is the ZF at least by 8dB in terms of SNR through computer simulations. From experimental tests, we verify the feasibility of the proposed beamforming algorithm for realizing a practical LTE based TDD base-station for utilizing channel resources more efficiently.
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