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An Adaptive Fusion Successive Cancellation List Decoder for Polar Codes with Cyclic Redundancy Check
Yuhuan WANG Hang YIN Zhanxin YANG Yansong LV Lu SI Xinle YU
IEICE TRANSACTIONS on Communications
Publication Date: 2020/01/01
Online ISSN: 1745-1345
Type of Manuscript: PAPER
Category: Fundamental Theories for Communications
polar codes, Gaussian approximation, adaptive fusion successive cancellation list decoder, probability threshold,
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In this paper, we propose an adaptive fusion successive cancellation list decoder (ADF-SCL) for polar codes with single cyclic redundancy check. The proposed ADF-SCL decoder reasonably avoids unnecessary calculations by selecting the successive cancellation (SC) decoder or the adaptive successive cancellation list (AD-SCL) decoder depending on a log-likelihood ratio (LLR) threshold in the decoding process. Simulation results show that compared to the AD-SCL decoder, the proposed decoder can achieve significant reduction of the average complexity in the low signal-to-noise ratio (SNR) region without degradation of the performance. When Lmax=32 and Eb/N0=0.5dB, the average complexity of the proposed decoder is 14.23% lower than that of the AD-SCL decoder.