关键词: 多径超宽带, 同步, RAKE接收机

Abstract:

A scheme of symbol timing is proposed, which is based on a modified parallel autocorrelation algorithm. By using the iteratively modified received signals as the local template of the match filter, the power losses caused by waveform distortion decreased. At the same time the acquisition convergence will get fast without complex estimation like RAKE. We analyze the effects of timing estimation error on bit error rate in the multipath environment. The simulations showed that the proposed method can find the symbol timing fast and accurately.

Key words: ultra wide band, synchronize, RAKE receiver