Premium
An eigenanalysis interference canceler with robust capabilities
Author(s) -
Chang AnnChen,
Chiang ChingTai,
Chen YuanHwang
Publication year - 2000
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(20000420)25:2<100::aid-mop5>3.0.co;2-4
Subject(s) - adaptive beamformer , interference (communication) , single antenna interference cancellation , subspace topology , control theory (sociology) , computer science , electronic engineering , signal (programming language) , convergence (economics) , beamforming , algorithm , engineering , telecommunications , artificial intelligence , channel (broadcasting) , decoding methods , control (management) , economics , programming language , economic growth
This paper incorporates robust capability into adaptive array beamforming based on the eigenanalysis interference canceler (EIC). It has been shown that the EIC demonstrates the advantages of fast convergence speed and maximal suppression of interference over the conventional beamformers. However, the performance of the EIC is very sensitive to a pointing error, especially when the interference number is overestimated. Projecting the incorrect steering vector onto the signal subspace, we present a robust technique where an appropriate blocking matrix is constructed in the EIC to mitigate the effect of the pointing error. Employing the corrected steering vector, the signal cancellation can be overcome even if the interference number is overestimated. Computer simulations are provided to illustrate the robust capability of the proposed technique. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 25: 100–103, 2000.