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Proceedings Paper

Robust adaptive beamforming algorithm based on interference-subspace projection technique
Author(s): Hyekyung Jwa; Joohwan Chun; Joowan Kim; Hyunseo Oh; Mungeon Kyeong
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Paper Abstract

We propose a new robust adaptive beamforming algorithm with the structure of the GSC (generalized sidelobe canceller). Similarly to the LCMV (linearly constrained minimum variance) beamformer, the performance of the GSC degrades greatly in the presence of array error. When we do not know the array steering vector exactly, the blocking matrix of the GSC cannot remove the desired signal completely. To overcome this difficulty, we propose to project the weight vector into the interference subspace, and therefore the desired signal residual present in the output of the blocking matrix is also projected into the interference subspace. As a result, the desired signal is not cancelled in the GSC.

Paper Details

Date Published: 20 November 2001
PDF: 8 pages
Proc. SPIE 4474, Advanced Signal Processing Algorithms, Architectures, and Implementations XI, (20 November 2001); doi: 10.1117/12.448672
Show Author Affiliations
Hyekyung Jwa, Electronics and Telecommunications Research Institute (South Korea)
Joohwan Chun, Korea Advanced Institute of Science and Technology (South Korea)
Joowan Kim, KM Telecom (South Korea)
Hyunseo Oh, Electronics and Telecommunications Research Institute (South Korea)
Mungeon Kyeong, Electronics and Telecommunications Research Institute (South Korea)


Published in SPIE Proceedings Vol. 4474:
Advanced Signal Processing Algorithms, Architectures, and Implementations XI
Franklin T. Luk, Editor(s)

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