An Analog Approach to Suppressing In-Band Narrow-Band Interference in UWB Receivers
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Due to the huge bandwidth of ultra-wide-band (UWB) systems, in-band narrow-band interference (NBI) may hinder receiver performance. Sources of potential NBI that lie within the IEEE 802.15.3a UWB bandwidth are presented. To combat interference in multi-band orthogonal frequency-division multiplexing (MB-OFDM) UWB systems, an analog notch filter is designed to be included in the UWB receive chain. The filter's architecture is based on feedforward subtraction of the interference, and includes a least-mean-square (LMS) tuning scheme to match amplitudes of the two paths. An 8-bit discrete control is used to adjust the filter's center frequency across the UWB baseband. It was fabricated in TSMC's 0.18-m process, and experimental results are provided. 2007 IEEE.
IEEE Transactions on Circuits and Systems I: Regular Papers
author list (cited authors)
Fischer, T. W., Kelleci, B., Shi, K., Karsilayan, A. L., & Serpedin, E.
complete list of authors
Fischer, Timothy Wayne||Kelleci, Burak||Shi, Kai||Karsilayan, Aydn lker||Serpedin, Erchin