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Ultra-wideband (UWB) signals can be used for accurate time of arrival (TOA) based ranging because of their high time resolution. In this paper, a novel data-aided TOA estimation method is presented using dual pulse (DP) signal structure. It employs received signal autocorrelation and threshold crossing to detect the direct path. The effects of different threshold values and training sequence lengths...
A new form of transmitted reference technique is proposed in this paper, where compactly spaced or even multiple contiguous reference and data pulses are used for transmission. This structure enables a simple, robust and practical autocorrelation detector to be implemented in the receiver. It is also compatible with the signal format proposed within IEEE 802.15.4a working group for coherent and non-coherent...
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