Carrier Frequency Offset Estimation in OFDM systems as a Quadratic Eigenvalue Problem

View/ Open
Date
2017-12Alternative metrics PlumX
http://hdl.handle.net/11012/82945Altmetrics
10.13164/re.2017.1138
http://hdl.handle.net/11012/82945
http://hdl.handle.net/11012/82945
Metadata
Show full item recordAbstract
Carrier frequency offset (CFO) in orthogonal frequency division multiplexing (OFDM) systems is a major problem in achieving orthogonality between subcarriers. In this paper, we propose an estimator for CFO in OFDM systems using the subspace method. We used the linear prediction property of a complex sinusoidal signal. The estimator was obtained by solving a quadratic eigenvalue problem. Its performance was examined and compared with a Maximum-Likelihood (ML), Cyclic-Prefix based and Pilot-based estimators by the measures of mean square error (MSE), and Cramer-Rao Lower Bound (CRLB). Numerical results are presented to show the visible advantages obtained by using this estimator.
Keywords
OFDM, Carrier Frequency Offset estimation, Quadratic Eigenvalue problem, subspace method, Yule-WalkerPersistent identifier
http://hdl.handle.net/11012/82945Document type
Peer reviewedDocument version
Final PDFSource
Radioengineering. 2017 vol. 26, č. 4, s. 1138-1142. ISSN 1210-2512http://www.radioeng.cz/fulltexts/2017/17_01_1138_1142.pdf
Collections
- 2017/4 [36]