Adaptive Carrier Frequency Offset Estimation in Interference Environments for OFDMA Uplink Systems

被引：2

作者：

Cheng, Nan-Hung ^{[1
]}

Chen, Chien-Chung ^{[2
]}

Wang, Yi-Fan ^{[3
]}

Chen, Yung-Fang ^{[2
]}

机构：

[1] Natl Chung Shan Inst Sci & Technol, Informat & Commun Res Div, Taoyuan City, Taiwan

[2] Natl Cent Univ, Dept Commun Engn, Jungli City, Taoyuan, Taiwan

[3] Ranictek, Taipei, Taiwan

来源：

IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING | 2023年 / 18卷 / 10期

关键词：

heterogeneous networks; orthogonal frequency division multiple access; carrier frequency offset estimation; interference; ESPRIT;

D O I：

10.1002/tee.23894

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In orthogonal frequency division multiple access (OFDMA) systems, carrier frequency offsets (CFOs) influence the different users. In this paper, we proposed a CFO estimation algorithm with strong interference resistant capability for OFDMA systems. The first part of the proposed algorithm processes the received signals so as to deal with the CFO estimation problem. And the second part of the proposed algorithm is to use the proposed adaptive process to obtain the updated CFO estimation and track the parameters' time-variations. Simulations demonstrate the effectiveness of this method and show that its performance is to the Cramer-Rao Bounds (CRB). (c) 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

引用

页码：1664 / 1672

页数：9

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