Title page for etd-0804108-183431


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URN etd-0804108-183431
Author Yung-Lin Chang
Author's Email Address No Public.
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Department Communications Engineering
Year 2007
Semester 2
Degree Master
Type of Document
Language English
Title Distributed Detection in UWB-IR Sensor Networks with Randomization of the Number of Pulses
Date of Defense 2008-07-25
Page Count 59
Keyword
  • Distributed Detection
  • UWB
  • Sensor Networks
  • Abstract In this thesis, we consider a distributed detection problem in wireless sensor networks (WSNs)
    using ultrawide bandwidth (UWB) communications. Due to the severe restrictions on power
    consumption, energy efficiency becomes a critical design issue in WSNs. UWB technology
    has low-power transceivers, low-complexity and low-cost circuitry which are well suited to the
    physical layer requirements for WSNs. In a typical parallel fusion network, local decisions are
    made by local sensors and transmitted through a wireless channel to a fusion center, where
    the final decision is made. In this thesis, we control the number of UWB pulses to achieve
    the energy efficient distributed detection. We first theoretically characterize the performance
    of distributed detection using UWB communications. Both AWGN and fading channels are
    considered. Based on the analysis, we then obtain the minimum number of the pulses per
    detection to meet the required performance. To achieve a near-optimal design, we further
    propose a multiple access technique based on the random number of UWB pulses. Finally, the
    performance evaluation is provided to demonstrate the advantage of our design.
    Advisory Committee
  • Chin-Liang Wang - chair
  • Ding-Bing Lin - co-chair
  • Char-Dir Chung - co-chair
  • Chih-Peng Li - advisor
  • Tsang-Yi Wang - advisor
  • Files
  • etd-0804108-183431.pdf
  • indicate accessible in a year
    Date of Submission 2008-08-04

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