Title page for etd-0825110-004649


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URN etd-0825110-004649
Author Chen-Psi Zhao
Author's Email Address m973070011@student.nsysu.edu.tw
Statistics This thesis had been viewed 5374 times. Download 1427 times.
Department Communications Engineering
Year 2009
Semester 2
Degree Master
Type of Document
Language English
Title Optimal Zero-Forcing Design of Precoders and Decoders for Multiuser Cooperative Networks
Date of Defense 2010-06-25
Page Count 65
Keyword
  • zero-forcing
  • cooperative
  • decoding
  • precoding
  • Abstract The cooperative communication is one of technologies which can explore the space diversity to resist fading channel. The spatial diversity is achieved by allowing various terminals behaving or a virtual antenna array and forwarding signal for a source terminal in cooperative manner. Under the existence of multiple sources, resource allocation to each source user is even more crucial to enhance the system performance and achieve higher diversity gain. In this work, we proposed a multiuser relaying strategy for a cooperative network with multiple sources sharing the radio resource provided by the cooperative relays simultaneously. Different from the existing work, the set of relays forwards signals of all source users over a common channel to raise spectral efficiency. With full channel information available at relays, the set of sub-optimal precoders and decoders was proposed in terms of maximal the average SNR over all users, subject to eliminating the multiple access interference (MAI) at each destination and satisfying total power constraint among all relays. It shows from the simulation results that, compared with the conventional cooperative strategy and direct transmission, the proposed scheme provides pronounced improvement on the outage capacity.
    Keywords: user cooperation, multiple access, resource allocation
    Advisory Committee
  • Tsang-Yi Wang - chair
  • Chih-Peng Li - co-chair
  • Chao-Kai Wen - co-chair
  • Wan-Jen Huang - advisor
  • Files
  • etd-0825110-004649.pdf
  • indicate accessible in a year
    Date of Submission 2010-08-25

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