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 Subcarrier-Clearing Based Carrier Frequency Offset Estimation Scheme Robust to Heterogeneous Network Interference 


Vol. 50,  No. 2, pp. 341-356, Feb.  2025
10.7840/kics.2025.50.2.341


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  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.

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[IEEE Style]

Y. Yeo and J. Kim, "Subcarrier-Clearing Based Carrier Frequency Offset Estimation Scheme Robust to Heterogeneous Network Interference," The Journal of Korean Institute of Communications and Information Sciences, vol. 50, no. 2, pp. 341-356, 2025. DOI: 10.7840/kics.2025.50.2.341.

[ACM Style]

Yujin Yeo and Juyeop Kim. 2025. Subcarrier-Clearing Based Carrier Frequency Offset Estimation Scheme Robust to Heterogeneous Network Interference. The Journal of Korean Institute of Communications and Information Sciences, 50, 2, (2025), 341-356. DOI: 10.7840/kics.2025.50.2.341.

[KICS Style]

Yujin Yeo and Juyeop Kim, "Subcarrier-Clearing Based Carrier Frequency Offset Estimation Scheme Robust to Heterogeneous Network Interference," The Journal of Korean Institute of Communications and Information Sciences, vol. 50, no. 2, pp. 341-356, 2. 2025. (https://doi.org/10.7840/kics.2025.50.2.341)
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pISSN : 1226 - 4717
eISSN : 2287 - 3880