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Volume 29 Issue 7
Jan.  2011
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Zheng He, Hu Han-ying, Lu Pei-zhong. Optimization of Two BP-Based Decoding Algorithms for Short LDPC Codes on Fast Rayleigh Fading Channel[J]. Journal of Electronics & Information Technology, 2007, 29(7): 1588-1591. doi: 10.3724/SP.J.1146.2005.01610
Citation: Zheng He, Hu Han-ying, Lu Pei-zhong. Optimization of Two BP-Based Decoding Algorithms for Short LDPC Codes on Fast Rayleigh Fading Channel[J]. Journal of Electronics & Information Technology, 2007, 29(7): 1588-1591. doi: 10.3724/SP.J.1146.2005.01610

Optimization of Two BP-Based Decoding Algorithms for Short LDPC Codes on Fast Rayleigh Fading Channel

doi: 10.3724/SP.J.1146.2005.01610
  • Received Date: 2005-12-13
  • Rev Recd Date: 2006-08-07
  • Publish Date: 2007-07-19
  • By using the Minimum Mean Square Error (MMSE) criterion, the design of two improved Belief Propagation (BP)-based, i.e., the scaled BP-based and offset BP-based algorithms is presented, for decoding of short Low-Density Parity-Check (LDPC) codes on the fast Rayleigh fading channel. Based on the MMSE criterion, theoretical formulas and numerical calculations on the optimum factors for these two BP-based algorithms are provided. The simulation results for the (3,6) regular LDPC codes of lengths 504 and 1008 on the fast Rayleigh fading channel demonstrate that the scaled BP-based and offset BP-based algorithms with the proposed factors can achieve the performance better than that of the BP algorithm.
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