Title page for etd-0724115-135324


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URN etd-0724115-135324
Author Fu-jhong Jheng
Author's Email Address No Public.
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Department Communications Engineering
Year 2014
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Full-Duplex Relaying Design in Amplify-and-Forward MIMO Relay Systems
Date of Defense 2015-07-29
Page Count 51
Keyword
  • multiple-input multiple-output relay (MIMO relay)
  • amplify-and-forward (AF)
  • Full-duplex (FD)
  • minimum mean-squared error (MMSE)
  • QR successive interference cancellation (QR-SIC)
  • Karush-Kuhn-Tucker (KKT)
  • Abstract Recently, the full-duplex (FD) design has received significant attention due to the ability it provides higher spectral efficiency. Unlike to the conventional half-duplex (HD) device, the FD node can simultaneously transmit and receive signals, doubling the spectral efficiency but incurring the loop-interference (LI). In this thesis, we apply the FD to the amplify-and-forward (AF) multiple-input multiple-output relay (MIMO Relay) systems. We jointly design the linear source and relay precoders to mitigate the influence of the SI and meanwhile to leverage the channel links of the source-relay and the relay-destination so that the end-to-end performance is enhanced. Herein, both the linear minimum mean-squared error (MMSE) and the nonlinear QR successive interference cancellation (QR-SIC) receivers are considered in the precoder design. Since the related optimization is inherent not convex, finding the optimum solution is difficult. To provide the tractable solution, we propose iterative methods for precoders design regarding to the MMSE and the QR-SIC receivers. In each iterative approach, we split the original problem into two sub-problem, one for solving source precoder and the other for the relay precoder. Further with some matrix manipulations, each sub-problem can finally obtain the closed-form solution by the Karush-Kuhn-Tucker (KKT) conditions. The source and relay precoders can be recursively obtained by the two sub-problems. Moreover, we additionally develop a low-complexity iterative approach for the precoders with MMSE receiver. Simulation results validate the proposed designs under various channel and LI conditions.
    Advisory Committee
  • Chih-Peng Li - chair
  • Chun-Tao Lin - co-chair
  • Tsang-Yi Wang - co-chair
  • Wan-Jen Huang - co-chair
  • Fan-Shuo Tseng - advisor
  • Files
  • etd-0724115-135324.pdf
  • Indicate in-campus at 2 year and off-campus access at 2 year.
    Date of Submission 2015-08-24

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