吉林大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (05): 1371-1376.

• paper • Previous Articles     Next Articles

High performance and low complexity receiver for LDPC coded MIMO system

HU Jun-feng1,2, ZHANG Hai-lin1, BAI Jie3, YANG Yuan1   

  1. 1.State Key Laboratory of Integrate Services Network, Xidian University, Xi'an 710071, China|2.CETC No. 20 Research Institute, Xi'an 710068, China|3.No. 203 Research Institute of China Ordnance Industries, Xi'an 710065, China
  • Received:2008-02-28 Online:2010-09-01 Published:2010-09-01

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Abstract:

An efficient iterative receiver was proposed for LowDensity ParityCheck (LDPC) coded MultiInput MultiOutput (MIMO) system. On one hand, the unbiased Minimum MeanSquare Error (MMSE) Iterative Tree Search (ITS) detector was improved by adding one bit complement sequences. Compared with the original detector, the improved detector is more robust and provides high performance at lower complexity. One the other hand, a low complexity LDPC decoder was given. The proposed decoder not only has low computing complexity but also converges very fast (about 5 iterations is sufficient). Simulation results show that the whole receiver proves good system performance with reduced complexity.

Key words: communication, multi input multi output (MIMO) system, low density parity check (LDPC) codes, iterative receiver

CLC Number: 

  • TN911.25
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