Frequency adaptive DAA design based on frequency band encoding

A frequency adaptive detect and avoid (DAA) design method based on frequency band encoding is presented for narrow band interference suppression. Gaussian derivative pulse is considered as the ultra-wideband (UWB) original pulse because of its characteristics of zero DC component, easy generation and meeting with the Federal Communications Commission (FCC) indoor and outdoor spectral mask. Simulation results show that the proposed DAA method can provide stable UWB normal transmit power, have high transmission efficiency and make uninterrupted communication. The adaptive pulses create -40dB notch depth in the frequency band of the WLAN victim system. Furthermore, the adaptive pulses produce arbitrary spectral notches matching the FCC spectral mask.