一种低时延极化码列表连续删除译码算法

A Low-latency Successive Cancellation List Decoding Algorithm for Polar Codes

为进一步降低译码时延,提出一种基于路径复用的低时延自适应列表连续删除译码算法。针对不同列表连续删除译码间存在重复路径的现象,采用基于CRC校验的重复路径复用的译码方案。仿真结果表明,与传统CA-SCL算法以及AD-SCL算法相比,该译码算法能够在信噪比较低的信道中保持较高的译码性能,并获得更低的译码时延。

In order to further reduce the decoding delay, a low-latency adaptive Successive Cancellation List（SCL） decoding algorithm based on path reuse is proposed. A repeated path replicating scheme based on CRC check is adopted for the phenomenon that there is a duplicate path between SCL decoders for different lists. Simulation results show that compared with traditional CA-SCL algorithm and AD-SCL algorithm,the proposed decoding algorithm can maintain high decoding performance and lower decoding delay in the low signal-to-noise ratio channel.