面向6G空天通信的极化编码技术:需求、现状与展望

Polar Coding Techniques for 6G Aerospace Communications:Requirements,Status,and Perspectives

6G空天通信复杂多样的业务、场景对信息的可靠传输及系统适应能力提出了新的挑战。作为第一种理论可达信道容量的高性能编码,极化码是未来6G数据传输的重要候选方案。简要介绍了6G空天通信系统信息传输的难点及对信道编码技术的需求。对包括极化码编码构造、级联极化码、高性能译码算法在内的高可靠极化码增强技术,以及以速率适配、极化编码调制、极化编码混合重传为代表的高韧性极化码自适应传输技术等现状进行了综述。最后结合6G关键技术,展望未来极化码可能的发展方向。

The diverse and complex services and scenarios in 6G aerospace communication pose new challenges for reliable information transmission and system adaptability.As the frst class of codes to achieve the theoretical channel capacity,polar codes are a promising candidate for future 6G data transmission.This paper begins by outlining the challenges associated with information transmission in 6G aerospace communication systems and the requirements for channel coding technologies.It then reviews recent advancements in polar code enhancement techniques,including polar code construction,concatenated polar codes,and high-performance decoding algorithms.Furthermore,the paper examines adaptive transmission techniques for polar codes,such as rate adaptation,polar-coded modulation,and hybrid automatic repeat request schemes.In conclusion,potential future directions for the development of polar codes are explored,particularly in the context of emerging 6G technologies.