Study on UWB systems in the presence of narrowband interference

Multi-band OFDM UWB system is the leading proposal for the new IEEE 802.15.3a standard for wireless high bit-rate personal area networks. The limits on transmit power spectral density due to FCC requirements will most likely cause the UWB system to experience narrowband interference (NBI) making interference suppression techniques a necessity. In this paper, we determine the effect of NBI on UWB system, and present the methods to improve the performance of the UWB system in the appearance of NBI and propose an appropriate technique to mitigate the NBI.