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

翻译：ABS+极化码是Arikan极化码的推广形式，其极化速度显著提升。本文提出了ABS+极化码SCL解码器的LLR域实现方案。此外，我们对SCL算法进行优化以降低LLR计算复杂度。与传统极化码相比，所提方法在高信噪比区域达到相同帧错误率时，SCL解码器所需的算术运算量更少。