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CN 34-1054/N

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Efficient time domain channel estimation for MIMO SC-FDMA systems

  • State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China

Cite this: JUSTC, 2009, 39(10): 1119-1124
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  • Received Date: May 18, 2009
  • Revised Date: July 02, 2009
  • Published Date: October 30, 2009
    Abstract
  • A two-sided comb-type pilot structure generated using Golay complementary sequence and time-domain channel estimation is proposed for MIMO SC-FDMA systems under time-varying frequency selective fading channels. Both left-shift and right-shift fast periodic Golay correlation lattices are combined as a symmetrical lattice. It can be used to efficiently implement periodic correlations of phase-shift and sequence orthogonal comb-type pilot blocks in the time domain. Employing this special lattice, computational complexities are significantly reduced. Low-complexity algorithm can reduce power consumption of a processor, which meets one of the requirements of green communications. Simulation results demonstrate the performance merits of the proposed scheme.
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