Ultra-wideband (UWB) is a new wireless communication technology in time domain, More comprehensive attention has been taken to it because of its low power consumption, good ability of anti-interference and multiple path and high system capability. The paper simply introduced the history of UWB, the basic principle and the key technologies of UWB. Especially, We had a further analysis about the receiving in the UWB communication system. Then we analyze the bit error probability performance of the two models that using diversity technology by MTLAB .The results obtained are compared by theoretic analysis and computer simulation .The simulation results show that it has apparently improvement of the bit error probability after lead diversity receiver into the Ultra-width band communication system.
Keywords: Ultra-width band；Time Hopping ; Pulse Position Modulation；Correlation-receive; Diversity Receive