A Novel Embedded Pilot-Aided OCDM System Over Time-Varying Channels

被引：0
|
作者：
Du, Zhaopeng [1 ]
Mei, Lin [2 ,3 ]
Lin, Xu [1 ]
Li, Zhiyang [1 ]
Zhang, Bo [1 ]
机构：
[1] Harbin Inst Technol, Dept Elect & Informat Engn, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Sch Elect & Informat Engn, Harbin 150001, Peoples R China
[3] Pengcheng Lab, Shenzhen 518055, Peoples R China
来源：
IEEE COMMUNICATIONS LETTERS | 2024年 / 28卷 / 11期
关键词：
Code division multiplexing; TV; Channel estimation; Chirp; Indexes; Symbols; Estimation; time-varying (TV) channels; orthogonal chirp division multiplexing (OCDM);
D O I：
10.1109/LCOMM.2024.3436579
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
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.
引用
收藏
页码：2643 / 2647
页数：5
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