Title page for etd-0917116-022020


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URN etd-0917116-022020
Author Ming Lee
Author's Email Address No Public.
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Department Communications Engineering
Year 2016
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Joint Carrier Frequency Offset Estimation and Self-Interference Cancellation Design in Full-duplex OFDM-based Systems
Date of Defense 2016-10-07
Page Count 36
Keyword
  • carrier frequency offset (CFO)
  • channel estimation
  • phase noise (PHN)
  • self-interference (SI)
  • Full-duplex (FD)
  • Abstract Full-duplex (FD) orthogonal frequency division multiplexing (OFDM) systems substantially provide higher spectral efficiency due to simultaneous communication of the uplink and downlink. However, phase noise (PHN) and carrier frequency offset (CFO) practically cause inter-carrier interference and rotation of transmit data signal, which degrades the accuracy of channel estimation as well as the performance of detection, especially in the time-varying channel environment. Unlike to conventional half duplex system, the received signals encounter the self-interference (SI) which is challengeable to be accuracy estimated in the presence of PHN and time-varying environment. The time-varying channel can essentially be captured by the complex exponential basis expansion model (CE-BEM), where the channel is described by the BEM coefficients. In this thesis, we propose an EM-based algorithm for joint estimation of BEM coefficients corresponding to self-interference and desired channels, PHN, and CFO in FD-OFDM systems, which is more general than the existing methods. Simulation results validate our joint estimation and show superiority over the existing methods.
    Advisory Committee
  • Tsang-Yi Wang - chair
  • Chao-Yuan Hsu - co-chair
  • Wan-Jen Huang - co-chair
  • Fan-Shuo Tseng - advisor
  • Files
  • etd-0917116-022020.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2016-10-17

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