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Volume 40 Issue 9
Sep.  2014
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Journal of Beijing University of Aeronautics and Astronautics  > 2014  >  40(9): 1165-1169.
Zhao Danfeng, Wang Yang, Liao Xiet al. Space-time coding in asynchronous dual-satellite MIMO systems[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(9): 1165-1169. doi: 10.13700/j.bh.1001-5965.2013.0602(in Chinese)
Citation: Zhao Danfeng, Wang Yang, Liao Xiet al. Space-time coding in asynchronous dual-satellite MIMO systems[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(9): 1165-1169. doi: 10.13700/j.bh.1001-5965.2013.0602(in Chinese)
shu

Space-time coding in asynchronous dual-satellite MIMO systems

doi: 10.13700/j.bh.1001-5965.2013.0602

  • College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China

  • Received Date: 22 Oct 2013
  • Publish Date: 20 Sep 2014
    Abstract
  • The received signals are asynchronous due to the different transmission delays in the dualsatellite multiple-input multiple-output (MIMO) system. Aiming to solve the asynchronism problem, a time reversal full-rate full-diversity space time coding scheme was proposed. The space-time code words were interleaved and divided into two groups after the transmitting symbols were space time coded. Then the symbol sequence in one group was time reversed and a guard interval was added between groups, which ensured that the full rate and full diversity gain could be achieved in the asynchronous dual-satellite MIMO system. Meanwhile, there was a low-complexity optimal decoding algorithm for the proposed scheme. The simulation results show that the proposed space time coding scheme can achieve better performance compared with the traditional schemes. And the performance gain is more considerable when the high-order modulation is employed or the channel is in the deep shadowing state.

     

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