Lattice Reduction Aided V-BLAST Algorithm in LTE System
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    Abstract:

    LTE is the fourth generation mobile communication dominated by OFDM-MIMO technical features. Signal detection in the terminal of it needs a kind of detection algorithm with lower complexity and better performance to achieve. A lattice reduction aided algorithm is a preprocessing technique that it enables the columns of channels matrix to be approximately orthogonal. It can eliminate the interference among these Sub-channels and reduce the effect of the enhancement of noise. On the basis of ELLL, a weaker reduction criterion, called diagonal reduction with potentially lower computational cost than the ELLL, is proposed, and we further put forward a new lattice reduction aided detection algorithm which associated K-best with V-BLAST on the basis of DR. As depicted in our simulation, the performance of the algorithm which is proposed is close to that of ML with a lower computational complexity.

    Reference
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高明,刘金铸. LTE系统基于格基约减辅助V-BLAST算法.计算机系统应用,2015,24(5):124-128

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History
  • Received:August 23,2014
  • Revised:October 13,2014
  • Online: May 15,2015
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