Modified kurtosis detection for UWB impulse radios

Impulse radio ultra-wideband (IR-UWB) receivers based on kurtosis detector (KD) can achieve much better performance than those based on energy detection (ED). However, when narrowband interferences (NBIs) are present, the KD-based receivers suffer serious performance degradation. In this paper, a modified KD (MKD) is proposed to improve the NBI mitigation ability of the UWB receiver. Computer simulation results show that although the bit-error-rate (BER) performances of the MKD-based receiver are marginally lower than those of the KD-based receiver when no NBI is present, the MKD-based receiver can achieve much better BER performance when NBIs are present.