Nonuniform sampling in coherent UWB system

Impulse UWB systems often use pulses of short duration in the baseband modulation and have a large spectrum bandwidth. Because of this the receiver needs to sample the signal at a high sampling rate and it is difficult to reduce the implementation complexity. This paper proposes a novel scheme of nonuniform sampling based on the mechanism of matched filter in coherent UWB systems. This scheme greatly reduces the average sampling rate with almost no system BER performance degradation and only a little change to the receiver circuit. The result of system simulation is in accord with theoretical analysis.