An Iterative Channel Estimation Algorithm Based on OMP for OCDM Systems

被引：1

作者：

Zhan, Tao ^{[1
,2
]}

Ma, Teng ^{[1
,2
]}

Yu, Yang ^{[3
]}

Lei, Xia ^{[1
,2
]}

Zhou, Ju ^{[3
]}

机构：

[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu, Peoples R China

[2] Sci & Technol Commun Networks Lab, Shijiazhuang 050081, Hebei, Peoples R China

[3] China Acad Aerosp Sci & Innovat, Beijing 100000, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2024年 / 28卷 / 07期

关键词：

Code division multiplexing; Channel estimation; Chirp; Matching pursuit algorithms; Interference; Symbols; Sensors; Orthogonal chirp division multiplexing (OCDM); orthogonal matching pursuit (OMP); channel estimation; spectral efficiency (SE); high-speed communications; SIGNAL RECOVERY;

D O I：

10.1109/LCOMM.2024.3395015

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

This letter proposes an iterative channel estimation algorithm based on orthogonal matching pursuit (OMP) for orthogonal chirp division multiplexing (OCDM) systems, where the pilot and data are superimposed on each chirp. Therefore, such a system can achieve higher spectral efficiency (SE) compared to most of the existing algorithms. Meanwhile, a pilot pattern is designed in the frequency domain to ensure the estimation accuracy while reducing the power occupied by pilot. Furthermore, the influence of data symbols on channel estimation is decreased through iterations. Simulation results demonstrate the fast convergence of the proposed iterative algorithm as well as better bit error rate (BER) performance in high-speed communication scenarios compared to related algorithms.

引用

页码：1634 / 1638

页数：5

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