Optimal processing of an impulse radio signal subjected to narrow band interference

Ultra wide band (UWB) links are inherently subject to narrowband interference (NBI) from other narrowband communication links. An UWB receiver architecture that is proven effective in mitigating NBI sources is the analog filter bank (AFB) followed by a generalized matched filter (GMF) processing as introduced in J. Nielsen et al. (2004) and R. Pasand et al. (2004). In this paper, a further development of this architecture is developed, which introduces two and three level quantization (2LQ, 3LQ) for the required sampling at the output of the AFB instead of multibit linear quantization (LQ). This substantially reduces the implementation complexity of the UWB receiver as well as the computational effort required. Simulation of the AFB receiver with 2LQ, 3LQ is given in this paper, which shows the remarkable observation that the performance loss attributed to this crude quantization is negligible.