26 July 2000 Blind beamforming for suppression of instantaneously narrowband signals in DS/SS communications using subspace projection techniques
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Abstract
This paper proposes a novel blind beamforming method for interference mitigation in direct-sequence spread-spectrum (DS/SS) communications based on subspace projection. Instantaneously narrowband interference signals are considered. The interference signals are highly localized in the time-frequency domain, and their characteristics are different from those of the DS/SS signal. The instantaneous frequencies of the nonstationary interference signals are estimated from the time-frequency domain and used in the temporal domain for interference nulling. We derive the receiver SNRs, which shows improved performance in strong interference environments.
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Yimin Zhang, Yimin Zhang, Moeness G. Amin, Moeness G. Amin, } "Blind beamforming for suppression of instantaneously narrowband signals in DS/SS communications using subspace projection techniques", Proc. SPIE 4045, Digital Wireless Communication II, (26 July 2000); doi: 10.1117/12.394084; https://doi.org/10.1117/12.394084
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