Title page for etd-0825110-160527


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URN etd-0825110-160527
Author Ruei-Ran Hwang
Author's Email Address m973070002@student.nsysu.edu.tw
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Department Communications Engineering
Year 2009
Semester 2
Degree Master
Type of Document
Language English
Title A Low Complexity Cyclic Prefix Reconstruction Scheme for Single-Carrier Systems with Frequency-Domain Equalization
Date of Defense 2010-07-30
Page Count 50
Keyword
  • single-carrier frequency domain equalization (SC-FDE)
  • cyclic prefix (CP)
  • inter-block interference (IBI)
  • successive interference cancellation (SIC)
  • inter-symbol interference (ISI)
  • Abstract The cyclic prefix (CP) is usually adopted in single carrier frequency domain equalization (SC-FDE) system to avoid inter-block interference (IBI) and inter-symbol interference (ISI) in multipath fading channels. In addition, the use of CP also converts the linear convolution between the transmitted signal and the channel into a circular convolution, leading to significant decrease in receiver equalization.
    However, the use of CP reduces the bandwidth efficiency. Therefore the SC-FDE system without CP is investigated in this thesis. A number of schemes have been proposed to improve the performance of systems without CP, where both IBI and ICI are dramatically increased. Unfortunately, most of the existing schemes have extremely high computational complexity and are difficult to realize. In this thesis, a novel low-complexity CP reconstruction (CPR) scheme is proposed for interference cancellation, where the successive interference cancellation (SIC) and QR decomposition (QRD) are adopted. In addition, the system performance is further improved by using the fact that the
    interferences of different symbols are not the same. Simulation experiments are conducted to verify the system performance of the proposed scheme. It is shown that the proposed scheme can effectively reduce the interference, while maintain a low computational complexity.
    Advisory Committee
  • Yu-Te Su - chair
  • Ding-Bing Lin - co-chair
  • Chin-Liang Wang - co-chair
  • Char-Dir Chung - co-chair
  • Chih-Peng Li - advisor
  • Files
  • etd-0825110-160527.pdf
  • indicate in-campus access in a year and off_campus not accessible
    Date of Submission 2010-08-25

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