Systems Engineering and Electronics

Previous Articles     Next Articles

Optimization decoding algorithm for LDPC codes

LIN Zhi-guo1，2， PENG Wei-dong1， LIN Jin-fu1， TAN Rui-lian3， SONG Xiao-ou3   

  1. 1. Research Center for Integrated Electronic & Information System and Electronic Countermeasure Technology, Air Force Engineering University, Xi’an 710051, China; 2. Equipment Management and Safety Engineering College, Air Force Engineering
    University, Xi’an 710051, China; 3. Engineering University of Armed Police Force, Xi’an 710000, China
  • Online:2014-09-12 Published:2010-01-03

PDF (PC)

Abstract:

An improved optimization decoding algorithm is proposed for binary low-density parity-check (LDPC) codes under any discrete Gaussian channel. First, through theory analysis and mathematical derivation, the mathematical model is constructed for the decoding problem. Then, the optimization decoding algorithm is demonstrated for the model. Finally, several simulations are carried out on VC6.0 for the algorithm’s decoding performance and efficiency and the comparison with other algorithms is made. The results show that the algorithm outperforms the former algorithm on either bit-error rate or decoding efficiency and also outperforms the common min-sum algorithm on biterror rate. The results are in good agreement with the analysis.

[an error occurred while processing this directive]