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Narrowband Interference Suppression in Multi-Band OFDM Ultra Wideband Communication Systems: A Mixed-Mode Approach

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6 Author(s)
Kelleci, B. ; Dept. of Electr. Eng., Texas A&M Univ., College Station, TX ; Fischer, T.W. ; Kai Shi ; Yi Zhou
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To avoid significant losses that might be induced by a narrowband interference (NBI) on the performance of a multi-band (MB) OFDM ultra wideband (UWB) receiver, efficient NBI mitigation schemes are required. This paper proposes a novel mixed-mode NBI suppression scheme that relies on the cooperation between a digital NBI detector and an adaptive analog notch filter. Simulation results show that the proposed mixed-mode suppression scheme improves the performance of the digital frequency excision scheme in a MB-OFDM UWB receiver by as much as an equivalent signal-to-interference ratio gain of 9 dB

Published in:

Digital Signal Processing Workshop, 12th - Signal Processing Education Workshop, 4th

Date of Conference:

24-27 Sept. 2006