A modified normalized min-sum algorithm for LDPC decoding using order statistics

作者：Xue, Wen; Ban, Tian^*; Wang, Jianxin

来源：International Journal of Satellite Communications and Networking, 2017, 35(2): 163-175.

DOI：10.1002/sat.1173

• LDPC decode
• sum-product algorithm
• min-sum algorithm
• normalized MSA
• modified NMSA
• order statistics

In this paper, we propose a new modified normalized min-sum algorithm for low-density parity-check decoding. Instead of normalizing the results of the check node renew calculations by a single modification factor, we use two different modification factors to normalize the results of check node renew calculations. One modification factor for the position of the first minimum value and another modification factor for other positions. We obtain two modification factors by theoretical analysis using the theory of order statistics. Simulation results show that the new modified normalized min-sun algorithm achieves better bit error rate performance than normalized min-sun algorithm without adding implementation complexity.

• 出版日期2017-4
• 单位南京理工大学