期刊
IEEE TRANSACTIONS ON SIGNAL PROCESSING
卷 59, 期 4, 页码 1601-1611出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSP.2010.2096222
关键词
Adaptive arrays; array signal processing; interference suppression; robustness
资金
- Agency for Science, Technology and Research (A*STAR), Singapore
- National Natural Science Foundation of China [60802068, 61001150]
- Guangdong Natural Science Foundation [8451064101000498]
- Program for New Century Excellent Talents in University [NCET-10-0370]
- Fundamental Research Funds for the Central Universities
- Natural Science Foundation of Jiangsu Province, China [BK2010495]
- Research Foundation of Nanjing University of Aeronautics and Astronautics (NUAA)
- [2009ZZ0055]
Based on worst-case performance optimization, the recently developed adaptive beamformers utilize the uncertainty set of the desired array steering vector to achieve robustness against steering vector mismatches. In the presence of large steering vector mismatches, the uncertainty set has to expand to accommodate the increased error. This degrades the output signal-to-interference-plus-noise ratios (SINRs) of these beamformers since their interference-plus-noise suppression abilities are weakened. In this paper, an iterative robust minimum variance beamformer (IRMVB) is proposed which uses a small uncertainty sphere (and a small flat ellipsoid) to search for the desired array steering vector iteratively. This preserves the interference-plus-noise suppression ability of the proposed beamformer and results in a higher output SINR. Theoretical analysis and simulation results are presented to show the effectiveness of the proposed beamformer.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据