摘要
面对互联网时代呈指数增长的全球数据流量,超高速通信的发展需求日益迫切,太赫兹通信因拥有巨大的可用带宽资源,成为下一代超高速无线通信关键技术之一。太赫兹通信系统分为电子学与光子辅助两种类型,其中后者在通信速率、频率灵活调控、与光纤接入网无缝融合等方面具有独特优势。首先介绍了典型光子辅助太赫兹通信系统的基本原理,在此基本原理框架下,梳理了系统中信号生成与接收、多维复用以及概率整形等技术的研究进展,并探讨了该类通信系统需要进一步解决的问题。
With the exponential growth of global data traffic in the internet era,the demand of ultra-high-speed communications is becoming increasingly urgent.Because of its huge available bandwidth resources,terahertz communication has become one of the key technical approaches for the next generation of ultra-high-speed wireless communications.Terahertz communication systems can be divided into two types:the systems based on electronics technology and those based on photonics-assisted technology.The latter has some unique advantages,such as high communication rate,flexible frequency tunability,and seamless integration with optical fiber access networks.The basic principles of typical photonics-assisted terahertz communication systems are introduced firstly.Then,under these basic principles,the research progresses of signal generation and reception,multi-dimensional multiplexing and probabilistic constellation shaping in the systems are reviewed.Finally,the developing problems need to be solved in the photonics-assisted terahertz communication system are discussed.
作者
李小军
王迪
龚静文
LI Xiaojun;WANG Di;GONG Jingwen(National Key Laboratory of Science and Technology on Space Microwave,China Academy of Space Technology-Xi'an,Xi'an 710100,China)
出处
《量子电子学报》
CAS
CSCD
北大核心
2023年第4期423-435,共13页
Chinese Journal of Quantum Electronics
基金
科技部重点研发项目(2018YFB1801505)
重点实验室基金项目(6142411205205)。
关键词
光通信
太赫兹通信
光子辅助
信号生成与处理
多维复用
概率整形
optical communication
terahertz communication
photonics-assisted
signal generation and reception
multi-dimensional multiplexing
probabilistic constellation shaping
