상세정보
학술대회
Low-Complexity Joint DOA/TOA Estimation Algorithm for Mobile Location
- 저자
- 정수엽, 김수진, 김나영, 강준혁, 김영억
- 발행일
- 201103
- 출처
- Wireless Communications and Networking Conference (WCNC) 2011, pp.581-586
- 협약과제
- 11PR4800, 채널 적응형 실감위성방송 전송기술 개발, 오덕길
- 초록
- In this paper, we present a low-complexity joint estimation algorithm of the direction of arrival (DOA) and time of arrival (TOA) for mobile location system, which is based on a multiple signal classification (MUSIC) algorithm. To reduce the computational overhead of conventional joint DOA/TOA estimation algorithms, the proposed approach employs two complexity reduction schemes: separation of the signal vector for individually extracting DOA/TOA and pseudo-spectrum computation with discrete Fourier transform (DFT). In addition, the loss of accuracy caused by the separation process is compensated by summing multiple pseudo-spectrums. Compared with the conventional two-dimensional (2-D) MUSIC algorithm, the proposed low-complexity algorithm not only substantially reduces the computational complexity but also provides better performance, especially in a low signal-to-noise ratio (SNR). The effectiveness of the proposed algorithm is verified by simulation results. © 2011 IEEE.
- KSP 제안 키워드
- Computational complexity, Direction of arrival(DoA), Joint Estimation, Location system, Low-complexity algorithm, Mobile location, Multiple signal classification (MUSIC) algorithm, Signal noise ratio(SNR), Signal-to-Noise, ToA estimation, complexity reduction