Interference mitigation Of UWB signal from IEEE 802.11a signal by template waveform processing using fourier transform

Ultra Wideband (UWB) technology is a potential technology for short range communication with high data rate and relatively small amount of transmitted power. The coexistence of UWB systems with other narrowband systems make UWB systems prone to interference because of low transmission power limits. In this paper, we propose a technique to mitigate the effect of interference from IEEE 802.11a wireless local area network (WLAN) using method of template waveform processing. We use Fourier transform to approximate the template at the receiver. We approximate the template by two methods as a sum of subcarriers at different frequencies except the interfering frequencies and original template with removal of interfering frequencies. We compare the proposed interference mitigation technique with Gabor approximation method proposed by K. Ohno and T. Ikegami to show better interference rejection using proposed technique.