Title page for etd-0601113-180111


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URN etd-0601113-180111
Author Chung-de Liu
Author's Email Address No Public.
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Department Communications Engineering
Year 2012
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The Performance Evalution of MIMO System Using Interference Alignment
Date of Defense 2013-06-07
Page Count 38
Keyword
  • performance analysis
  • distance metrics
  • MIMO
  • channel estimation error
  • Interference Alignment
  • Abstract Recently, interference alignment (IA) has emerged as a promising technique to effectively
    mitigate interference in wireless communication systems. It has also evolved as a powerful
    technique to achieve the optimal degrees of freedom of interference channel. IA can be im-
    plemented in many ways such as space, time, frequency and code dirercities. Currently, most
    researches on developing IA assume that channel state information (CSI) is well-known at the
    transceiver. In practice, perfect CSI at the transceiver cannot be obtained due to many factors
    such as signal delay, quantization error, channel estimation error and feedback error. Under
    our investigation, the performance of IA is very sensitive to imperfect CSI. Therefore, this
    thesis proposes a spatial domain IA scheme for the three-user multiple-input multiple-output
    (MIMO) downlink interference channels, and analyzes the effect of channel estimation errors
    by modeling the estimation error as independent complex Gaussian random variables. The
    simulation also shows comparison results between recieving orthogonal beamforming matrix
    with traditional decoder and directly used MIMO equalizer without any beamforming matrix.
    Advisory Committee
  • Chao-Tang Yu - chair
  • Chao-Kai Wen - co-chair
  • Wan-Jen Huang - co-chair
  • Tsang-Yi Wang - advisor
  • Files
  • etd-0601113-180111.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2013-07-03

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