JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM ›› 2017, Vol. 24 ›› Issue (1): 35-39.doi: 10.1016/S1005-8885(17)60185-7

• Wireless • Previous Articles     Next Articles

Probability stopping criterion for analog decoding of LDPC codes

Zheng Hao, Zhang Shuyi, Li Lintao, Gao Yuan, Shao Liwei   

  1. 1. School of Information and Electronics, Beijing Institute of Technology 
    2. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications 
    3. Research Institute of Beijing Institute of Technology in Zhongshan
  • Received:2016-08-02 Revised:2017-01-06 Online:2017-02-28 Published:2017-02-28
  • Contact: Shu-Yi Zhang
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (61601027), and the Guangdong Provincial Science and Technology Project (2015B010101002).

Abstract: To detect uncorrectable frames and terminate the decoding procedure early, a probability stopping criterion for iterative analog decoding of low density parity check (LDPC) codes is proposed in this paper. By using probabilities of satisfied checks to detect uncorrectable frames and terminate decoding, the proposed criterion could be applied to analog decoders without much structure modifications. Simulation results show that the proposed criterion can reduce the average number of iterations and achieve a better balance in bit error ratio (BER) performance and decoding complexity than other stopping criteria using extrinsic information.

Key words: LDPC codes, analog decoding, early stopping, probability stopping criterion

CLC Number: