Noncoherent UWB-PPM receiver with multiple sub-intervals selective integration optimization

Abstract

Noncoherent receivers are attractive for pulsed UWB systems due to the implementation simplicity. In this paper, a noncoherent receiver structure with an integration optimization scheme of multiple sub-intervals selection is proposed to alleviate the noise effect in detecting UWB-PPM signals. Based on the derivation and modification of the BER performance closed-form expression of the conventional noncoherent receiver, the optimization algorithm is presented and verified numerically, the corresponding receiver presents obvious enhancement to the conventional noncoherent receiver, and in sparse multipath channels even outperforms those with conventional integration optimization of single-interval constraint