Abstract
In this work, a new hybrid approach based on offset min-sum decoding algorithm is proposed for decoding irregular low-density parity-check (LDPC) codes. In the proposed algorithm, incorporations are made in both the nodes of the Tanner graph with varying error correcting factors. In addition, to the error correcting factors, an adaptive weighting factors are utilized in CNU and VNU process to mitigate the numerical instabilities and negative correlation effects. These modifications in turn enhance the error correcting performance, which ultimately results in a better decoding efficiency. Through exhaustive simulation and comparison, it is shown that the proposed algorithm with a six-bit non-uniform quantization scheme exhibits good error correcting outcome at BER of 10−5 with an acceptable computational complexity.
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References
Richardson, T., Shokrollahi, A., Urbanke, R.: Design of capacity approaching irregular low-density parity-check codes. IEEE Trans. Inf. Theory 47(2), 619–637 (2001)
Mackay, D.J.C.: Good error-correcting codes based on very sparse matrices. IEEE Trans. Inf.Theory 45, 399–431 (1999)
Fossorier, M., Mihalijevic, M., Imai, H.: Reduced complexity iterative decoding of low-density parity-check codes based on belief propagation. IEEE Trans. Commun. 47(5), 673–680 (1999)
Xue, W., Ban, T., Wang, J.: A modified normalized min-sum algorithm for LDPC decoding using order statistics. Int. J. Satell. Commun. Netw. (Wiley) 35(2), 163–175 (2017)
Cho, K., Chung, K.-S.: Self-adaptive termination check of min-sum algorithm for LDPC decoders using the first two minima. KSII Trans. Internet Inf. Syst. 11(4), 1987–2001 (2017)
Cho, K., Chung, K.-S.: Simplified 2-dimensional scaled min-sum algorithm for LDPC decoder. J. Electr. Eng. Technol. (JEET) 12(1), 1921-718 (2017)
Wang, X., Cao, W., Li, J., Shan, L., Cao, H., Li, J., Qian, F.: Improved min-sum algorithm based on density evolution for low-density parity check codes. IET Commun. 11(10), 1582–1586 (2017)
Roberts, M.K., Jayabalan, R.: A modified optimally quantized offset min-sum decoding algorithm for low-complexity LDPC decoder. Wirel. Pers. Commun. J. 80(2), 561–570 (2015)
Chen, J., Fossorier, M.P.C.: Density evolution for two improved BP-based decoding algorithms of LDPC codes. IEEE Commun. Lett. 6(5), 208–210 (2002)
Acknowledgements
This research work is funded by the Department of Science and Technology, Government of India through Early Career Research Award (Young Scientist) scheme of Science and Engineering Research Board (SERB) (Grant no. ECR/2016/001275).
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Roberts, M.K., Sunny, E. (2019). An Improved Hybrid Offset-Based Min-Sum Decoding Algorithm. In: Fong, S., Akashe, S., Mahalle, P. (eds) Information and Communication Technology for Competitive Strategies. Lecture Notes in Networks and Systems, vol 40. Springer, Singapore. https://doi.org/10.1007/978-981-13-0586-3_70
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DOI: https://doi.org/10.1007/978-981-13-0586-3_70
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