A New Carrier Frequency Offset Estimation Using CP-ICA Scheme in OFDM Systems 


Vol. 31,  No. 12, pp. 1257-1264, Dec.  2006


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  Abstract

The carrier frequency offset causes loss of orthogonality between sub-carriers, thus leads to inter-carrier interference (ICI) in the OFDM symbol. This ICI causes severe degradation of the BER performance of the OFDM receiver. In this paper, we propose a new ICI cancellation algorithm which estimates frequency offset at the time-domain by using CP-ICA method to the received sub-carriers phase rotation. This algorithm is based on a statistical blind estimation method, which mainly utilizes the EVD, rotating phasor and the 4th cumulants. Since our scheme does not need any training and pilot symbol in estimation, we can expect enhanced bandwidth efficiency in OFDM systems. Simulation results show that the proposed frequency offset estimator is more accurate than the other estimators in 0.0＜ε＜1.0.

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  Cite this article

[IEEE Style]

J. Kim and Y. Byun, "A New Carrier Frequency Offset Estimation Using CP-ICA Scheme in OFDM Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 12, pp. 1257-1264, 2006. DOI: .

[ACM Style]

Jong-Deuk Kim and Youn-Shik Byun. 2006. A New Carrier Frequency Offset Estimation Using CP-ICA Scheme in OFDM Systems. The Journal of Korean Institute of Communications and Information Sciences, 31, 12, (2006), 1257-1264. DOI: .

[KICS Style]

Jong-Deuk Kim and Youn-Shik Byun, "A New Carrier Frequency Offset Estimation Using CP-ICA Scheme in OFDM Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 12, pp. 1257-1264, 12. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880