Abstract
The acquisition performance of the channel- ized receiver for ultra-wideband (UWB) transmitted reference (TR) system is presented. Instead of sampling the received UWB signal with a single ADC as in a conventional fullband receiver, the channelized receiver digitizes with multiple slow ADCs, each of which samples a partial band of the UWB sig- nal. In this paper, we show that the frequency channelized receiver naturally leads to fast acquisition. In the channelized receiver, the reduced bandwidth in each subband widens the correlation peak, allowing the search increment to be corre- spondingly increased. Consequently, the search space in the channelized receiver is reduced, resulting in significantly faster acquisition time than in a fullband receiver.
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