关键词: 超宽带, Hermite脉冲, 多径信道, Rake接收机

Abstract:

This paper analyses the performance of a Hermite pluses based Ultra Wideband system in multipath channels.Base on correlation function of Hermite pluses,the captured energy of Rake is derived considering the impact of timing jitter on the Rake receiver.The output signal to interference and noise ratio is deduced.Theoretical bit error ratio (BER) performance is represented under Gaussian approximation.Both theoretical analysis and simulation show that the energy of intersymbol interference is insensitive to the number of Rake fingers;the larger number of Rake fingers leads to a better BER performance;and the larger timing jitter range brings on the increased probability of error.

Key words: ultra wideband;Hermite pulse;multipath channel;Rake receiver