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Volume 22 Issue 3
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2014  >  22(3): 189-193
HAN Chong, ZHANG Xiao-min, LI Tong-xu, CHEN Yu. An Improved Scheme for Limited Feedback QOSTBC[J]. Journal of Unmanned Undersea Systems, 2014, 22(3): 189-193. doi: 10.11993/j.issn.1673-1948.2014.03.007
Citation: HAN Chong, ZHANG Xiao-min, LI Tong-xu, CHEN Yu. An Improved Scheme for Limited Feedback QOSTBC[J]. Journal of Unmanned Undersea Systems, 2014, 22(3): 189-193. doi: 10.11993/j.issn.1673-1948.2014.03.007
shu

An Improved Scheme for Limited Feedback QOSTBC

doi: 10.11993/j.issn.1673-1948.2014.03.007
  • 1.

    College of Marine Engineering, Northwestern Polytechnical University, Xi′an 710072, China

  • 2.

    College of City, Zhejiang University, Hangzhou 310015, China

  • Received Date: 2013-10-31
  • Rev Recd Date: 2014-01-02
  • Publish Date: 2014-06-20
    Abstract
  • The quasi orthogonal space-time block code(QOSTBC) scheme uses feedback channel to improve system performance. Because the increase in amount of feedback results in higher complexity, the space-time code loses its own advantage. In this paper, an improved limited feedback QOSTBC scheme is proposed based on the diagonalizti- on reconstruction of encoding matrix and the adequate rotation of equivalent sub-channels. Combining the theory of un- derwater acoustic channel model and the simulation analysis, it shows that the proposed scheme is significantly im-proved in such parameters as peak power ratio, computation complexity of real numbers multiplication and real numbers addition. In addition, the system complexity is reduced, the equivalent channel gain is increased, and the bit error rate of system is lowered. Simulation results demonstrate the effectiveness and reliability of the proposed scheme.

     

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    • References(15)
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