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

IF 7.5 2区计算机科学 Q1 TELECOMMUNICATIONS

Digital Communications and Networks Pub Date : 2024-10-01 DOI:10.1016/j.dcan.2023.07.001

Dongxuan He , Zhi Zhang , Hao Lin , Zuomin Wu , Yingpei Huang , Zhaocheng Wang

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引用次数: 0

Abstract

Terahertz (THz) wireless communication has been recognized as a powerful technology to meet the ever-increasing 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.

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太赫兹无线信道上单载波和多载波波形的性能比较

太赫兹（THz）无线通信已被认为是满足日益增长的超高速服务需求的一项强大技术。为了在太赫兹频段上实现高效、可靠的无线通信，找到适合太赫兹通信的波形极为必要。本文将对太赫兹信道上的各种单载波和多载波波形进行性能比较。具体来说，首先简要介绍太赫兹通信的系统模型，包括放大器非线性、传播特性、相位噪声等。然后，介绍与单载波和多载波波形相关的收发器架构，以及相应的信号处理技术。为了评估波形的适用性，提供了有关功率效率、传输性能和计算复杂性的关键性能指标。仿真结果比较并验证了不同波形的性能，表明与循环前缀-OFDM（CP-OFDM）和其他单载波波形相比，离散-傅里叶变换传播正交频分复用（DFT-s-OFDM）在太赫兹通信中表现出色。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Digital Communications and Networks Computer Science-Hardware and Architecture

CiteScore

12.80

自引率

5.10%

发文量

915

审稿时长

30 weeks

期刊介绍： Digital Communications and Networks is a prestigious journal that emphasizes on communication systems and networks. We publish only top-notch original articles and authoritative reviews, which undergo rigorous peer-review. We are proud to announce that all our articles are fully Open Access and can be accessed on ScienceDirect. Our journal is recognized and indexed by eminent databases such as the Science Citation Index Expanded (SCIE) and Scopus. In addition to regular articles, we may also consider exceptional conference papers that have been significantly expanded. Furthermore, we periodically release special issues that focus on specific aspects of the field. In conclusion, Digital Communications and Networks is a leading journal that guarantees exceptional quality and accessibility for researchers and scholars in the field of communication systems and networks.