@article{M91F6934E,
title = "Subcarrier-Clearing Based Carrier Frequency Offset Estimation Scheme Robust to Heterogeneous Network Interference",
journal = "The Journal of Korean Institute of Communications and Information Sciences",
year = "2025",
issn = "1226-4717",
doi = "10.7840/kics.2025.50.2.341",
author = "Yujin Yeo, Juyeop Kim",
keywords = "OFDM, Carrier frequency offset, interference",
abstract = "This study suggests an enhanced carrier frequency offset estimation method based on subcarrier clearing. In heterogeneous network environments where the coverage of two base stations overlaps, a UE receives signals not only from the serving cell but also from other cells. Signals transmitted from non-serving cells can cause interference that degrades the accuracy of CFO estimation of the serving cell signal. This study introduces a method to compensate the effects of interference cell signals on CFO estimation by utilizing the characteristics of subcarrier allocation. Through a USRP testbed, it is experimentally shown that the proposed scheme guarantees effectiveness in both CFO estimation and PBCH decoding improvement."
}