Narrowband Interference Suppression for IEEE UWB Channels

In this paper we put forward a scheme for suppressing narrowband interference by the use of adaptive narrowband filtering. We compare this method with other schemes for the suppression of complex narrowband interference in OFDM UWB systems, such as the frequency excision method and complex narrowband interference identification and cancelation algorithms. The study shows that the three schemes give slightly different performance depending on the type of IEEE UWB channel, but the optimal solution is to apply a complex adaptive narrowband filter that offers a trade-off between narrowband interference suppression efficiency and computational complexity.