Polynomial Rooting Based Maximum Likelihood Carrier Frequency Offset Estimation for OFDM Systems

Feifei Gao*, A. Nallanathan, Arumugam Nallanathan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review

1 Citation (Scopus)

Abstract

The non-zero carrier frequency offset (CFO) must be compensated for orthogonal frequency-division multiplexing (OFDM) communications since it may destroy the orthogonality among subcarriers and cause severe degradation in system performance. Several blind CFO estimation methods were developed by exploiting the virtual carriers in practical OFDM transmissions, including a highly efficient approach by rooting a polynomial. However, this rooting method is suboptimal when the noise is present. In this work, we propose an improved polynomial rooting method that is shown to be the maximum likelihood (ML) estimator for both the noisy and the noise-free case. The simulation results clearly show the effectiveness and the better performance of the newly proposed method.

Original languageEnglish
Title of host publication2006 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC 2006), VOLS 1-4
Place of PublicationNEW YORK
PublisherIEEE
Pages1046-1049
Number of pages4
ISBN (Print)978-1-4244-0269-4
Publication statusPublished - 2006
EventIEEE Wireless Communications and Networking Conference - Las Vegas, United Kingdom
Duration: 3 Apr 20066 Apr 2006

Publication series

NameIEEE Wireless Communications and Networking Conference
PublisherIEEE
ISSN (Print)1525-3511

Conference

ConferenceIEEE Wireless Communications and Networking Conference
Country/TerritoryUnited Kingdom
Period3/04/20066/04/2006

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