Title page for etd-0725115-094833


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URN etd-0725115-094833
Author Sheng-Hung Li
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 Performance Analysis of Relay Selection in Two-Way Relay Networks with Channel Estimation Error
Date of Defense 2015-07-28
Page Count 67
Keyword
  • censoring network.
  • outage probability
  • amplify-and-forward
  • two-way relay networks
  • Channel estimation error
  • Abstract The impact of channel estimation errors is investigated in two-way relay networks (TWRNs) with two different channel state information (CSI) estimation schemes, namely, cascaded and separate. In the cascaded scheme, the relay node is selected on the basis of the CSI of the individual channels between the source nodes and the relay node. In the separate scheme, relay node selection is based on the CSI of the cascaded channel between the two source nodes. For both estimation schemes, the effect of the CSI estimation error on the outage probability is examined by Cramer-Rao lower bound. Contrary to previous reports, the source nodes in the TWRN are assumed to yield different estimation errors. Numerical results confirm the validity of the derived expression and indicate that the presence of different estimation errors at the two source nodes can significantly influence the performance of the TWRN.
    However, we extend the relay selection problem to non-reciprocal TWRNs. We propose a selection scheme based on the concept of censoring rule, in which each relay node can decide whether the received signal should be forwarded. This method can save a level of transmission power and maintain the diversity gain without gathering all of the CSI between the source nodes and relay nodes at a central node. The effectiveness of the proposed scheme is evident in the simulation results.
    Advisory Committee
  • Yu-Te Su - chair
  • Guu-Chang Yang - co-chair
  • Chin-Liang Wang - co-chair
  • Sen-Hung Wang - co-chair
  • Char-Dir Chung - co-chair
  • Chih-Peng Li - advisor
  • Files
  • etd-0725115-094833.pdf
  • Indicate in-campus at 3 year and off-campus access at 3 year.
    Date of Submission 2015-08-25

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