%0 Journal Article
%A Tian Bin
%A Yuan Fang
%T Modified min-sum SCAN decoding algorithm for polar codes
%D 2018
%R 10.19682/j.cnki.1005-8885.2018.1031
%J Journal of China Universities of Posts and Telecommunications
%P 90-96
%V 25
%N 6
%X The state-of-the-art soft-output decoder of polar codes is the soft cancellation (SCAN) decoding algorithm, which performs well at the cost of plentiful computations. Based on the SCAN decoding algorithm, a modified method with revised iterative formula is proposed, marked modified min-sum SCAN (MMS-SCAN). The proposed algorithm simplifies the update formula of nodes and reduces the complexity of iterative decoding process by the piecewise<br>
approximation function. Meanwhile, the bit error rate (BER) of the proposed method can approach the performance of original SCAN decoding method without performance loss. The simulation reveals that the MMS-SCAN decoding algorithm can achieve the effect that the BER curve almost coincides with the original SCAN decoding curve.
%U https://jcupt.bupt.edu.cn/EN/10.19682/j.cnki.1005-8885.2018.1031