自适应Polar码快速译码优化设计  

Adaptive Polar Code Fast Decoding Optimization Design

作　　者：舒冰心 雷菁[1] 鲁信金 刘哲铭 程江华[1] SHU Bingxin;LEI Jing;LU Xinjin;LIU Zheming;CHENG Jianghua(College of Electronic Science,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学电子科学学院,湖南长沙410073

出　　处：《无线电通信技术》2025年第1期124-130,共7页Radio Communications Technology

基　　金：国家自然科学基金(62201596);国防科技大学学校科研计划资助项目(ZK22-45)。

摘　　要：众所周知,快速循环冗余校验辅助的串行抵消列表(Fast Cyclic Redundancy Check-Aided Successive Cancellation List,Fast CA-SCL)译码算法是通过比特分类来实现快速译码功能。针对其算法复杂度高、时延大等问题,提出一种自适应列表Fast CA-SCL(Adaptive List Fast CA-SCL,ALF-CA-SCL)算法优化设计,提出对应的硬件架构设计方案加以验证。该算法通过灵活改变列表长度优化策略,保证译码的可靠性,降低译码复杂度和传输时延。仿真结果表明,误码性能相当时,与Fast CA-SCL算法相比,所提算法使得系统效率提高了5.45倍。It is well known that Fast Cyclic Redundancy Check-Aided Successive Cancellation List(Fast CA-SCL)decoding algorithm realizes the function of fast decoding by bit classification.Aiming at the problems of high algorithm complexity and long delay,an Adaptive List Fast CA-SCL(ALF-CA-SCL)algorithm was proposed for optimal design,and corresponding hardware architecture design scheme was proposed for verification.The algorithm can flexibly change the list length optimization strategy to ensure the reliability of decoding,reduce the decoding complexity and transmission delay.Simulation results show that the proposed algorithm improves the system efficiency by 5.45 times compared with fast CA-SCL when the error performance is equivalent.

关 键 词：Polar码 快速译码 自适应列表Fast CA-SCL译码 硬件实现 

分 类 号：TN919.23[电子电信—通信与信息系统]