Efficient Estimation and Compensation of CFO and STO in Multi-carrier Communication System 


Vol. 36,  No. 5, pp. 441-449, May  2011


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  Abstract

Sample timing offset (STO) and carrier frequency offset (CFO) are caused by inter-symbol interference (ISI), inter-carrier interference (ICI) and phase error in orthogonal frequency division multiplexing (OFDM) system. OFDM characteristic is sensitive about STO and CFO. So when ICI occurs, compensation is hard and complex equalizer is needed. In this paper, we propose an effective correction method using feedback process with pilot and synchronization symbol. After feedback with estimated value in frequency domain, STO and CFO are corrected by control sample & and holder and oscillator. As a result of simulation, we confirm that STO and CFO can be corrected without equalizer through feedback.

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  Cite this article

[IEEE Style]

H. Lee and H. Ryu, "Efficient Estimation and Compensation of CFO and STO in Multi-carrier Communication System," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 5, pp. 441-449, 2011. DOI: .

[ACM Style]

Hui-Kyu Lee and Heung-Gyoon Ryu. 2011. Efficient Estimation and Compensation of CFO and STO in Multi-carrier Communication System. The Journal of Korean Institute of Communications and Information Sciences, 36, 5, (2011), 441-449. DOI: .

[KICS Style]

Hui-Kyu Lee and Heung-Gyoon Ryu, "Efficient Estimation and Compensation of CFO and STO in Multi-carrier Communication System," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 5, pp. 441-449, 5. 2011.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880