吉林大学学报(工学版) ›› 2009, Vol. 39 ›› Issue (06): 1654-1658.

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Iterative multiuser detection for LDPC coded UWB systems

YANG Jian-hua1,2,ZHAO Dan-feng1,ZHAO Chun-hui1   

  1. 1.School of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China|2.College of Science,Jiamusi University,Jiamusi 154007,China
  • Received:2007-12-07 Online:2009-11-01 Published:2009-11-01

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Abstract:

A lowcomplexity multiuser detection algorithm for Low Density Parity Check (LDPC) coded UltraWideband (UWB) systems is proposed. The algorithm applies the Turbo iterative method for multiuser detection. It combines soft interference cancellation and Minimum MeanSquared Error (MMSE) filter to significantly decreases the complexity of the receiver. Simulation results show that the proposed system outperforms conventional systems. With a few iterations the proposed system can effectively restrain multiaddress interference and its performance is close to that of a singleuser system.

Key words: information processing technology, ultra wideband, low density parity check code, multiuser detection

CLC Number: 

  • TN914.2
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