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The ultra-wideband (UWB) wireless technology is a hot point in communication area. Pulse position modulation with time hopping (PPM-TH) and pulse amplitude modulation with direct sequence (PAM-DS) are two of the basic UWB modulation methods. In this paper, we study the performances of the traditional UWB and time reversal (TR) UWB in the PPM-TH and PAM-DS system respectively. We found that the performance...
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