주파수 선택적 신호 환경에서 안테나 어레이의 FBMC/OQAM 시스템 적용Application of antenna array to FBMC/OQAM system in frequency-selective signal environment
- Other Titles
- Application of antenna array to FBMC/OQAM system in frequency-selective signal environment
- Authors
- 김예카테리나; 안흥섭; 최승원
- Issue Date
- Mar-2019
- Publisher
- (사)디지털산업정보학회
- Keywords
- Filter Banks; Antenna Array; Highly Frequency-Selective Fading; OFDM
- Citation
- (사)디지털산업정보학회 논문지, v.15, no.1, pp.67 - 76
- Indexed
- KCI
- Journal Title
- (사)디지털산업정보학회 논문지
- Volume
- 15
- Number
- 1
- Start Page
- 67
- End Page
- 76
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/14322
- DOI
- 10.17662/ksdim.2019.15.1.067
- ISSN
- 1738-6667
- Abstract
- Despite attractive advantages such as good time-frequency localization and improved spectral efficiency, filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) suffers from multipath fading. In highly frequency-selective channels, the effect of multipath interference can significantly distort the FBMC/OQAM signal due to the absence of cyclic prefix. To resolve the problem of the multipath interference in FBMC/OQAM, this paper proposes applying an antenna array that provides well shaped beam pattern for each multipath. To evaluate the performance of the proposed array system, various computer simulations have been conducted. The accuracy of direction of arrival estimation is demonstrated through spatial spectrum for a different number of antennas in a sub-array. The performance improvement is presented in terms of bit error rate. We found that the proposed array system mitigate the multipath interferences in Extended Typical Urban model with 12 antennas in a sub-array. Moreover, as the number of antennas in a sub-array increases, the system provides a signal-to-noise ratio gain.
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