Reconstruction of wireless UWB pulses by exponential sampling filter

Juuso Olkkonen, Hannu Olkkonen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Measurement and reconstruction of wireless pulses is an important scheme in wireless ultra wide band (UWB) technology. In contrary to the band-limited analog signals, which can be recovered from evenly spaced samples, the reconstruction of the UWB pulses is a more demanding task. In this work we describe an exponential sampling filter (ESF) for measurement and reconstruction of UWB pulses. The ESF is constructed from parallel filters, which has exponentially descending impulse response. A pole cancellation filter was used to extract the amplitudes and time locations of the UWB pulses from sequentially measured samples of the ESF output. We show that the amplitudes and time locations of p sequential UWB pulses can be recovered from the measurement of at least 2p samples from the ESF output. For perfect reconstruction the number of parallel filters in ESP should be 2p. We study the robustness of the method against noise and discuss the applications of the method.
Original languageEnglish
Pages (from-to)462-466
Number of pages5
JournalWireless Sensor Network
Volume2
Issue number6
DOIs
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

Keywords

  • Wireless Sensor Networks
  • UWB
  • Network Security
  • Finite Rate of Innovation

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