Polar codes: Encoding/decoding and rate-compatible jointly design for HARQ system  

作　　者：Qiaoli Zeng Quan Zhou Xiangkun He Youming Sun Xiangcheng Li Haiqiang Chen 

机构地区：[1]School of Computer,Electronics and Information and Guangxi Colleges and Universities Key Laboratory of Multimedia Communications and Information Processing,Guangxi University,Nanning 530004,China [2]Department of Mechanical and Aerospace Engineering,Nanyang Technological University,Singapore 999002,Singapore

出　　处：《Intelligent and Converged Networks》2021年第4期334-346,共13页智能与融合网络（英文）

摘　　要：Polar coding are the first class of provable capacity-achieving coding techniques for a wide range of channels.With an ideal recursive structure and many elegant mathematical properties,polar codes are inherently implemented with low complexity encoding and decoding algorithms.Since the block length of the original polar construction is limited to powers of two,rate-compatible polar codes(RCPC)are presented to meet the flexible length/rate transmission requirements in practice.The RCPC codes are well-conditioned to combine with the hybrid automatic repeat request(HARQ)system,providing high throughput efficiency and such RCPC-HAPQ scheme is commonly used in delay-insensitive communication system.This paper first gives a survey of both the classical and state-of-the-art encoding/decoding algorithms for polar codes.Then the RCPC construction methods are discussed,including the puncturing,shortening,multi-kernel construction,etc.Finally,we investigate several RCPC-HARQ jointly design systems and discuss their encoding gain and re-transmission diversity gain.

关 键 词：polar code rate compatible hybrid automatic re-transmission request polar coding/decoding 

分 类 号：TN9[电子电信—信息与通信工程]