In this paper, a low-complexity approach for the automorphism ensemble decoder (AED) using successive cancellation (SC) as constituent decoders is proposed. The approach sequentially activates sub-decoders and terminates the decoding process based on pre-optimized parameters, derived from the strong correlation observed between the decoding outcome and the SC path metric. An algorithm is proposed to find a list of early termination thresholds that minimize average decoding complexity subject to a block-error rate (BLER) constraint. For various code parameters and a BLER below $10^{-3}$, simulation results show that average decoding complexity is reduced by a factor of at least $6 \times$, and up to $22 \times$, compared to the original AED complexity, with a negligible degradation in BLER.

翻译：本文提出一种低复杂度的自同构集成译码器（AED）实现方法，采用逐次相消（SC）作为组成译码器。该方法基于译码结果与SC路径度量之间存在的强相关性，通过预优化参数依次激活子译码器并终止译码过程。本文提出一种算法，用于在满足误块率（BLER）约束条件下，寻找使平均译码复杂度最小化的提前终止阈值列表。针对多种码参数且BLER低于$10^{-3}$的场景，仿真结果表明，与原始AED复杂度相比，平均译码复杂度降低至少6倍，最高可达22倍，而BLER性能仅有可忽略的下降。