Reducing Cyclic Prefix Overhead Based on Symbol Repetition in NB-IoT-Based Maritime Communication

作     者：Tian Xiang Daiming Qu Faquan Zhang Dejin Kong Tian Xiang;Daiming Qu;Faquan Zhang;Dejin Kong

作者机构：School of Electronic and Electrical EngineeringWuhan Textile UniversityWuhan 430200China Sthe State Key Laboratory of New Textile Materials and Advanced Processing TechnologiesWuhan Textile UniversityWuhan 430200China School of Electronic Information and CommunicationHuazhong University of Science and TechnologyWuhan 430074China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2022年第19卷第9期

页      面：1-9页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 

主　　题：NB-IoT narrowband physical random access channel cyclic prefix spectral efficiency 

摘      要：With the increasing maritime activities,a great demand of wide-area maritime digital data services is needed.Therefore,Narrowband Internet of Things(NB-IoT)that can provide wide coverage has been expected as an application for maritime communication networks(MCNS).In this paper,we aim to enhance the spectral efficiency in NB-IoT by reducing the cyclic prefix(CP)overhead in random access signal without causing interference.The key point of the proposed scheme is the symbols transmitted for multiple times repeatedly in NB-IoT.Specifically,all CP are removed and multi-path fading effect is eliminated by using a repeated symbol to cover the disturbed symbol to construct a circular convolution structure of the channel with the same effect as adding CP.In addition,a single-tap equalization is still appropriate.To validate the effectiveness of the proposed scheme,simulation results are carried out with respect to the bit error ratio(BER).