An OFDM Frequency Offset Estimation Scheme Robust to Timing Error 


Vol. 31,  No. 6, pp. 623-628, Jun.  2006


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  Abstract

This paper addresses the frequency offset estimation problem in the presence of the timing error for OFDM systems. When the timing error exists, the correlation value used for the frequency offset estimation could be reduced significantly due to the timing error, resulting in considerable degradation in estimation performance. In this paper, using the coherence phase bandwidth (CPB) and a threshold, a novel frequency offset estimation scheme is proposed and based on which, an efficient timing error estimation scheme is also proposed for the re-estimation of the frequency offset. The performance comparison results show that the proposed frequency offset estimation scheme is not only more robust to the timing error but also has less computational complexity, as compared with the conventional schemes. It is also demonstrated by simulation that the proposed timing error estimation scheme gives a reliable estimate of the timing error.

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  Cite this article

[IEEE Style]

S. Kim and S. Yoon, "An OFDM Frequency Offset Estimation Scheme Robust to Timing Error," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 6, pp. 623-628, 2006. DOI: .

[ACM Style]

Sanghun Kim and Seokho Yoon. 2006. An OFDM Frequency Offset Estimation Scheme Robust to Timing Error. The Journal of Korean Institute of Communications and Information Sciences, 31, 6, (2006), 623-628. DOI: .

[KICS Style]

Sanghun Kim and Seokho Yoon, "An OFDM Frequency Offset Estimation Scheme Robust to Timing Error," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 6, pp. 623-628, 6. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880