Title page for etd-0212114-001705


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URN etd-0212114-001705
Author Bing-gang Wu
Author's Email Address No Public.
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Department Electrical Engineering
Year 2013
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Limited Feedback Designs for Nonlinear Transceiver in Dual-Hop Amplify-and-Forward MIMO Systems
Date of Defense 2014-01-23
Page Count 49
Keyword
  • amplify-and-forward
  • channel state information
  • precoder
  • QR-successive interference cancellation
  • MMSE-successive interference cancellation
  • multiple-input multiple-output
  • Abstract In this thesis, we study the nonlinear transceiver designs with limited feedback mechanism in the multiple-input multiple-output (MIMO) amplify-and-forward relay systems. We consider two nonlinear receivers, QR - successive interference cancellation (SIC) and minimum mean-squared error (MMSE) SIC receivers, to jointly design the codeword selection criteria for the source and relay precoders. Considering the acquired channel state information (CSI), we proposed two kinds of codewords selection criteria. For the first, the destination exploits the global CSI, including the source-to-relay and the relay-to-destination channels, to jointly select the source and relay codewords. With the global CSI, the codeword selection criteria are devised based on the approximated optimum codeword and the maximum signal-to-interference plus noise (SINR) criteria. However, in real-word applications, the system has to spend large overhead to let the destination acquire the global CSI which essentially reduces the spectral efficiency and is not applicable in the time-varying environment. Therefore, we subsequently proposed the codeword selection criteria based on the local CSI where the relay only knows the source-to-relay channel and the destination acquires the relay-to-destination channel merely. The codeword selection criteria are then devised with the maximum SINR criterion. The SINR at the destination with the proposed local CSI is further analyzed to be a lower bound of that with the global CSI. Simulation results show that the proposed transceivers with global CSI is superior to that with local CSI while the later having shorter feedback latency and lower computational complexity.
    Advisory Committee
  • Shou-Sheu Lin - chair
  • Zi-Tsan Chou - co-chair
  • Chun-Tao Lin - co-chair
  • Tsang-Yi Wang - co-chair
  • Fan-Shuo Tseng - advisor
  • Files
  • etd-0212114-001705.pdf
  • Indicate in-campus at 3 year and off-campus access at 5 year.
    Date of Submission 2014-03-12

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