摘要
6G系统峰值数据传输速率需求为1Tbps,对通信系统的容量和频谱效率提出了巨大挑战。由此,超奈奎斯特传输作为一种高效的传输方式备受瞩目,其独特之处在于能够在不增加带宽和天线的情况下提升系统容量和频谱效率。从单载波传输到多载波传输,对超奈奎斯特传输的机理与波形、现有模型的干扰及相应的信号检测技术进行重点论述。对超奈奎斯特传输在载波恢复、同步、正交频分复用和多输入多输出方面的发展进行综述。最后,探讨超奈奎斯特传输在未来移动通信系统的发展发向和潜在的研究思路。
6G networks,with their peak data rate requirements reaching 1 Tbps,present significant challenges in system capacity and spectral efficiency.Faster-than-Nyquist transmission emerges as a highly efficient method,noteworthy for its ability to enhance system capacity and spectral efficiency without increasing bandwidth or antenna count,This paper provides an indepth analysis of the mechanisms and waveforms of faster-than-Nyquist transmission,from single-carrier to multicarrier systems,focusing on the interference issues inherent in current models and the corresponding signal detection technologies.It reviews developments in carrier recovery,synchronization,orthogonal frequency-division multiplexing,and multiple-input multiple-output techniques in the context of faster-than-Nyquist transmission,Finally,it explores the future trajectory and potential research directions of faster-than-Nyquist transmission in upcoming mobile communication systems.
作者
李强
王妍
李迎松
李莉萍
LI Qiang;WANG Yan;LI Yingsong;LI Liping(Key Laboratory of intelligent Computing&Signal Processing,Anhui University,Hefei 230601,China)
出处
《移动通信》
2024年第5期74-82,共9页
Mobile Communications
基金
国家自然科学基金资助项目“混合精度ADC系统中极化码编译码优化研究”(62071002)。
关键词
超奈奎斯特传输
频谱效率
干扰
信号检测
faster-than-Nyquist transmission
spectrum efficiency
interference
signal detection
