Information Computing and Applications

Volume 7030 of the series Lecture Notes in Computer Science pp 625-632

Research on Simplified Decoding Algorithm of RA Code 

  • Yanchun ShenAffiliated withCollege of Tangshan
  • , Yinpu ZhangAffiliated withCollege of Tangshan
  • , Jinhu ZhangAffiliated withTangshan Kaiyuan Autowelding System Co., Ltd.

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RA code, using BP iterative decoding algorithm for decoding in AWGN channel, is linear time encoding and decoding algorithm and its performance is closer to the Shannon limit. In order to improve decoding speed and reduce decoding complexity, this paper studies the simplified decoding algorithm of RA code, puts forward the minimal sum algorithm of RA code, and proposes the poly-line decoding algorithm based on BP algorithm. The simulation results show that error code rate of the system reduces and its performance closes to channel capacity with increasing message length. When the number of iterations increases, the error code rate drops with better system performance.


RA code  BP iterative decoding algorithm  minimal sum algorithm  poly-line decoding algorithm