Performance Analysis of a Multiband OFDM UWB System in the Presence of Narrowband Interference

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In this paper, the authors present a performance analysis of an Ultra Wide-Band (UWB) communication system based on Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) in the presence of narrowband interference. Although OFDM-based systems are known to be capable of withstanding some level of narrowband interference, mitigation techniques may have to be used when interference levels are high. Furthermore, as typical UWB systems employ low resolution analog-to-digital converters, the effect of narrowband interference may be exacerbated in the process of analog-to-digital conversion. In order to improve the performance of MB-OFDM UWB systems in the presence of narrowband interference, they consider the use of analog notch filters.