ABS+ polar codes are a generalization of Arikan polar codes that provides much faster polarization. We present an LLR-domain version of the SCL decoder of ABS+ polar codes. Furthermore, we optimize the SCL algorithm in order to reduce the complexity of LLR computation. In comparison with classical polar codes, the proposed approach requires less number of arithmetic operations in the SCL decoder to obtain the same frame error rate (FER) at high-SNR region.

翻译：ABS+极化码是Arikan极化码的泛化形式，能够实现更快速的极化收敛。本文提出ABS+极化码SCL译码器的LLR域实现方案，并通过优化SCL算法降低LLR计算的复杂度。与经典极化码相比，所提方法在SCL译码器中需要更少的算术运算即可在高信噪比区域获得相同的误帧率性能。