极化码译码算法的改进与FPGA实现  

Polarization Code Decoding Algorithm based on FPGA

作　　者：夏阁淞 葛万成[1] XIA Ge-song;GE Wan-cheng(Chinese-German School for Postgraduate Studies,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学中德学院

出　　处：《通信技术》2019年第11期2611-2616,共6页Communications Technology

摘　　要：极化码由于其简洁的线性编码方式和优越的译码性能,被5G移动通信标准中eMBB的控制信道编码所采用,对于其编解码的研究与实现意义重大。针对极化码存在译码延迟大、吞吐量低、硬件消耗量大等问题展开研究,并进行相应的改进。对于译码,对FFT和树结构等现有方案进行对比,在SC和SSC译码算法的基础上进行优化。仿真结果表明,提出的改进硬件结构进一步提高了吞吐量,总延迟平均减小57%,并能够在核心指标LUT和FF上分别减少63.9%和65.7%的硬件消耗,较大地提高了解码性能。The polarization code is adopted by the control channel coding of the embB gene in the 5G mobile communication standard for its simple linear coding method and superior decoding performance,and it is of great importance to explore and implement its codec.Aiming at the problems of polarization code such as large decoding delay,low throughput,and large hardware consumption,some exploration are done,and corresponding improvements also made.For the decoding,the existing schemes such as FFT and tree structure are compared and optimized on the basis of SC and SSC decoding algorithms.The simulation results indicate that the improved hardware structure proposed in this paper could further raise the throughput,and that the total delay is decreased by 57%on average,and the hardware consumption of 63.9%and 65.7%could be reduced on the core indicators LUT and FF,respectively.Thus the decoding performance is fairly improved.

关 键 词：极化码 FPGA编译码 信道极化 SC译码算法 

分 类 号：TN911[电子电信—通信与信息系统]