{"title":"A Novel Embedded Pilot-Aided OCDM System Over Time-Varying Channels","authors":"Zhaopeng Du;Lin Mei;Xu Lin;Zhiyang Li;Bo Zhang","doi":"10.1109/LCOMM.2024.3436579","DOIUrl":null,"url":null,"abstract":"In this letter, we propose a novel embedded pilot orthogonal chirp division multiplexing (OCDM) system. This system is mainly used for time-varying (TV) channels to reduce the overhead of OCDM channel estimation. In this system, a novel embedded chirp pilot arrangement in the discrete Fresnel domain with low overhead is designed. Furthermore, two channel estimation strategies are proposed for this pilot arrangement: a low-complexity data interference avoidance (IA) strategy and a higher-performance data interference suppression (IS) strategy. For the IS strategy, we also develop a novel channel estimator. Through simulation and analysis, we have demonstrated that the proposed system effectively improves the spectrum efficiency, energy efficiency, and transmission rate (SET) compared to traditional embedded pilot OCDM systems, while maintaining similar performance levels.","PeriodicalId":13197,"journal":{"name":"IEEE Communications Letters","volume":"28 11","pages":"2643-2647"},"PeriodicalIF":3.7000,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10620265/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"TELECOMMUNICATIONS","Score":null,"Total":0}
引用次数: 0
Abstract
In this letter, we propose a novel embedded pilot orthogonal chirp division multiplexing (OCDM) system. This system is mainly used for time-varying (TV) channels to reduce the overhead of OCDM channel estimation. In this system, a novel embedded chirp pilot arrangement in the discrete Fresnel domain with low overhead is designed. Furthermore, two channel estimation strategies are proposed for this pilot arrangement: a low-complexity data interference avoidance (IA) strategy and a higher-performance data interference suppression (IS) strategy. For the IS strategy, we also develop a novel channel estimator. Through simulation and analysis, we have demonstrated that the proposed system effectively improves the spectrum efficiency, energy efficiency, and transmission rate (SET) compared to traditional embedded pilot OCDM systems, while maintaining similar performance levels.
期刊介绍：
The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
