Performance comparison of single-carrier and multi-carrier waveforms over terahertz wireless channels  

作　　者：Dongxuan He Zhi Zhang Hao Lin Zuomin Wu Yingpei Huang Zhaocheng Wang 

机构地区：[1]Department of Electronic Engineering,Tsinghua University,Beijing 100084,China [2]OPPO Research Institute,Beijing,China [3]Tsinghua Shenzhen International Graduate School,Shenzhen 518055,China

出　　处：《Digital Communications and Networks》2024年第5期1297-1304,共8页数字通信与网络(英文版)

基　　金：supported in part by the National Key R&D Program of China under Grant 2018YFB1801501;in part by the National Natural Science Foundation of China under Grant 62101306;supported by OPPO Research Fund。

摘　　要：Terahertz(THz)wireless communication has been recognized as a powerful technology to meet the everincreasing demand of ultra-high rate services.In order to achieve efficient and reliable wireless communications over THz bands,it is extremely necessary to find an appropriate waveform for THz communications.In this paper,performance comparison of various single-carrier and multi-carrier waveforms over THz channels will be provided.Specifically,first,a system model for terahertz communication is briefly described,which includes amplifier nonlinearity,propagation characteristic,phase noise,etc.Then,the transceiver architectures related to both single-carrier and multi-carrier waveforms are presented,as well as their corresponding signal processing techniques.To evaluate the suitability of the waveforms,key performance metrics concerning power efficiency,transmission performance,and computational complexity are provided.Simulation results are provided to compare and validate the performance of different waveforms,which demonstrate the outstanding performance of Discrete-Fourier-Transform spread Orthogonal Frequency Division Multiplexing(DFT-s-OFDM)to THz communications when compared to Cyclic Prefix-OFDM(CP-OFDM)and other single-carrier waveforms.

关 键 词：Terahertz communication RF imperfection Single-carrier waveform Multi-carrier waveform 

分 类 号：TN9[电子电信—信息与通信工程]