Journal of Guangxi Normal University(Natural Science Edition) ›› 2011, Vol. 29 ›› Issue (4): 63-67.

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Coding in Interleave Division Multiple Access System

ZHANG Ai-li, ZHANG Xin-min, LI Zhi-yong   

  1. College of Computer and Information Technology,Henan Normal University,Xinxiang Henan 453007,China
  • Received:2011-06-30 Published:2018-11-16

Abstract: Interleave division multiple access (IDMA) system hasstrong anti-MAI ability and high spectrum efficiency.The low-complexity iterative detection algorithm is only used for well-designed multi-user code combinations in this system.Repeat accumulate (RA) code,a new error-correcting code,is simple in encoding and decoding and its performance is close to Shannon limit.IDMA and the RA codes are combined in this paper based on appropriate powerallocation scheme.The simulation results showed that,as the SNR increases,multi-user BER curves is gradually closed to the single-user,and it performs almost as well as LDPC-based IDMA,but much better than the system adopting convolutional codes.

Key words: IDMA, RA code, belief propagation algorithm, iterativedetection

CLC Number: 

  • TN929
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