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A robust beamformer for OFDM based WLANs against burst interference

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4 Author(s)
Zhu Liang Yu ; Center for Signal Process., Nanyang Technol. Univ., Singapore ; Fan Yang ; Wee Ser ; Rahadja, S.

A beamformer for burst interference suppression is proposed for an orthogonal frequency-division multiplexing (OFDM) system with receiver diversity. The proposed beamformer is a generalized sidelobe canceller (GSC) with a modified blocking matrix. The modified GSC blocking matrix using channel estimation results is proposed to combat the fading channel effects. Moreover, the diagonal loading method is used to obtain a beamforming performance robust against system imperfections. The simulation results show that the proposed beamformer greatly improves the system performance when strong interference exists.

Published in:

Signal Processing Systems, 2003. SIPS 2003. IEEE Workshop on

Date of Conference:

27-29 Aug. 2003

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