无线电工程2025，Vol.55Issue(4)：714-725,12.DOI:10.3969/j.issn.1003-3106.2025.04.004
面向通信感知一体化的仿射频分复用技术综述
A Survey on Affine Frequency Division Multiplexing Technology for Integrated Sensing and Communication
摘要
Abstract
In the Sixth-Generation(6G)mobile communication system,the deep integration of communication and sensing is of paramount importance,which imposes higher requirements on the native design of Integrated Sensing and Communication(ISAC)systems in terms of network architecture,networking technologies,and air interface capabilities.As a key technology,ISAC waveform design is expected to achieve the dual objectives of high-efficiency communication and high-precision sensing.The 6G system is anticipated to employ Extremely High Frequency(EHF)technology,especially in millimeter-wave and Terahertz bands to support applications such as low-altitude economy,Vehicle to Everything(V2X),high-speed railways,and satellite communications.These scenarios are often under heterogeneous and high-speed mobile conditions,posing significant challenges to wireless communication systems due to doubly-dispersive channels.Recently proposed Affine Frequency Division Multiplexing(AFDM)technology,which multiplexes information symbols in the Discrete Affine Fourier Transform(DAFT)domain,ensures that all paths are separated and each symbol experiences all path coefficients,thereby achieving full diversity over doubly-dispersive channels.The basic theory of AFDM is first introduced,then the performance differences between AFDM and other potential waveforms in ISAC systems are discussed,and finally the applications of AFDM in ISAC scenarios and future research directions are described and prospected.关键词
仿射频分复用/通信感知一体化/波形设计/6GKey words
AFDM/ISAC/waveform designs/6G分类
电子信息工程引用本文复制引用
李雨昂,丁昱翔,吕璐,杨龙,陈健..面向通信感知一体化的仿射频分复用技术综述[J].无线电工程,2025,55(4):714-725,12.基金项目
国家自然科学基金(62271368,62371367) （62271368,62371367）
陕西省重点研发计划(2023-ZDLGY-50) （2023-ZDLGY-50）
中央高校基本科研业务费(QTZX23066) National Natural Science Foundation of China(62271368,62371367) （QTZX23066）
The Key Research and Development Program of Shaanxi(2023-ZDLGY-50) （2023-ZDLGY-50）
Fundamental Research Funds for the Central Universities(QTZX23066) （QTZX23066）
