LDPC码和Polar码级联系统的发展综述  

A development overview of the concatenation system based on LDPC codes and Polar codes

作　　者：王秀敏 钱方磊 吴卓铤 WANG Xiumin;QIAN Fanglei;WU Zhuoting(College of Information Engineering,China Jiliang University,Hangzhou 310018,China)

机构地区：[1]中国计量大学信息工程学院,浙江杭州310018

出　　处：《中国计量大学学报》2018年第2期169-174,共6页Journal of China University of Metrology

基　　金：国家自然科学基金资助项目(No.61379027)

摘　　要：低密度奇偶校验码(Low Density Parity Check codes,LDPC codes)和极化码(Polar codes),是国际移动通信标准化组织3GPP在5G(5th-Generation)增强移动宽带场景的信道编码技术方案中,分别作为数据信道和控制信道的编码方案.LDPC码编码复杂度较高、硬件资源需求较大以及存在错误平层,而极化码具有线性编码复杂度以及瀑布式下降曲线,基于二者的级联系统可以大大改善彼此的缺点.首先我们研究分析了现有的级联系统,其次详细介绍了级联系统的实现方法,最后就级联系统研究中现存问题进行了分析,并探讨了其未来发展趋势.Low Density Parity Check codes and Polar codes are the encoding schemes of data channels and control channels respectively adopted by the International Mobile Telecommunications Standardization Organization 3GPP in the 5G Enhanced Mobile Broadband （eMBB） channel coding scheme. LDPC codes have the shortcomings of high encoding complexity, large hardware resource requirements and error floor. Polar codes have linear coding complexity and own waterfall descent curves. Concatenation systems based on these can greatly improve each other＇s weaknesses. First of all, we studied and analyzed the existing concatenation system. We then analyzed the concatenation system implementation method and the existing problems. Finally, we discussed its future development trend.

关 键 词：LDPC码 极化码 级联码 BP译码算法 

分 类 号：TN91[电子电信—通信与信息系统]