Journal on Communications ›› 2013, Vol. 34 ›› Issue (2): 8-14.doi: 10.3969/j.issn.1000-436x.2013.02.002

• Academic paper • Previous Articles     Next Articles

Low complexity linear parallel detection algorithm for near ML detection of MIMO systems

Guo-sheng RUI,Hai-bo ZHANG,Yang ZHANG,Wen-biao TIAN,Song ZHANG,Ting-jun LI   

  1. Signal and Information Processing Provincial KeyLaboratory ofShandongProvince, Naval Aeronautical and Astronautical University, Yantai264001, China
  • Online:2013-02-25 Published:2017-07-17
  • Supported by:
    The Special Foundation Program for Taishan Mountain Scholars

Abstract:

The existing parallel detection algorithms for MIMO systems have extremely high complexity under high order QAM and its complexity grows rapidly with the increase of the number of antenna.The non-parallel detection algorithms with low complexity have great SNR gap with optimal detection algorithm.A new parallel linear detection algorithm with low complexity was proposed.This algorithm exploited all symbols in QAM constellation as a reference to cancel the interference of the worst SNR sub-channel and detected the received signals of the rest with a new parallel linear detection algorithm based on lattice reduction.The simulation results show that the proposed detection algorithm is near the performance of the optimal detection algorithm and improves the diversity order with low complexity.Especially under the high order QAM, the complexity is decreased in evidence.

Key words: MIMO system, parallel detection, lattice reduction, QAM

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