Abstract
The timing offset is one of the main error sources in estimating the frequency offset in orthogonal frequency division multiplexing (OFDM)-based wireless local area network (WLAN) systems. Although some works have been done to mitigate the effect of the timing offset on the frequency offset estimation, most of the investigations require the knowledge of the timing offset range, which is not generally available in practical systems. In this paper, we propose a new frequency offset estimation algorithm using differential combining between two successive correlation samples, which does not require the knowledge of the timing offset range, and thus, is robust to the timing offset variation. The simulation results show that the proposed algorithm is not only robust to the timing offset variation, but also generally performs better than the conventional algorithm, in the case of the timing offset range being not known exactly.
This research was supported by grant No. R01-2004-000-10690-0 from the Basic Research Program of the Korea Science & Engineering Foundation. Dr. Yoon is the corresponding author.
Chapter PDF
Similar content being viewed by others
References
Nee, R.V., Prasad, R.: OFDM for Wireless Multimedia Communications. Artech House, London (2000)
IEEE Std. 802.11a-1999, Wireless LAN MAC and PHY Specifications – High-Speed Physical Layer in the 5 GHz Band. ISO/IEC 8802-11: 1999 (E) / Amd 1: 2000 (E). IEEE, New York (2000)
Prasad, N., Prasad, A.: WLAN Systems and Wireless IP for Next Generation Communications. Artech House, Boston (2002)
Bingham, J.A.C.: Multicarrier modulation for data transmission: an idea whose time has come. IEEE Commun. Mag. 28, 5–14 (1990)
Moose, P.H.: A technique for orthogonal frequency division multiplexing frequency offset correction. IEEE Trans. Commun. 42, 2908–2914 (1994)
Prasetyo, B.Y., Said, F., Aghvami, A.H.: Fast burst synchronisation technique for OFDM-WLAN systems. IEE Proceedings: Commun. 147, 292–298 (2000)
Li, J., Liu, G., Giannakis, G.B.: Carrier frequency offset estimation for OFDM-based WLANs. IEEE Signal Process. Lett. 8, 80–82 (2001)
Nogami, H., Nagashima, T.: A frequency and timing period acquisition technique for OFDM systems. In: Proc. IEEE PIRMC, Toronto, Canada, Sep. 1995, pp. 1010–1015 (1995)
Bang, K., Cho, N., Jun, H., Kim, K., Park, H., Hong, D.: A coarse frequency offset estimaion in an OFDM system using the concept of the coherence phase bandwidth. IEEE Trans. Commun. 49, 1320–1324 (2001)
Kim, S., Yoon, S.-H., Choi, H.-K., Kim, S.Y.: A low complexity and robust frequency offset estimation algorithm for OFDM-based WLAN systems. In: Alexandrov, V.N., van Albada, G.D., Sloot, P.M.A., Dongarra, J. (eds.) ICCS 2006. LNCS, vol. 3992, pp. 961–968. Springer, Heidelberg (2006)
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 2007 Springer Berlin Heidelberg
About this paper
Cite this paper
Ahn, S., Kim, S., Choi, HK., Kim, S.Y., Yoon, S. (2007). A Novel Frequency Offset Estimation Algorithm Using Differential Combining for OFDM-Based WLAN Systems. In: Shi, Y., van Albada, G.D., Dongarra, J., Sloot, P.M.A. (eds) Computational Science – ICCS 2007. ICCS 2007. Lecture Notes in Computer Science, vol 4490. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-72590-9_50
Download citation
DOI: https://doi.org/10.1007/978-3-540-72590-9_50
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-72589-3
Online ISBN: 978-3-540-72590-9
eBook Packages: Computer ScienceComputer Science (R0)