A Low Complexity Integer Frequency Offset Estimation Scheme Based on Coherence Phase Bandwidth for OFDM Systems

Abstract:

In this paper, we propose a low complexity integer frequency offset estimation scheme based on coherence phase bandwidth for orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme overcomes the effect of the timing offset via correlating the local and received OFDM training symbols in a coherence phase bandwidth block unit. Moreover, by utilizing a threshold to determine an interger frequency offset etimate, the proposed scheme need not calculate correlation values for all possible interger frequency offset candidates. From numerical results, it is demonstrated that the proposed scheme can estimate the integer freqeuncy offset with a reduced complexity while minataining the same level of the estimation performance.

• Periodical: Applied Mechanics and Materials (Volumes 479-480)
• Pages: 878-882
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.479-480.878
• Online since: December 2013
• Authors: Youngseok Lee, Seong Ro Lee, Seungsoo Yoo, Jeongyoon Shim, Jaewoo Lee, Seok Ho Yoon
• Keywords: Coherence Phase Bandwidth (CPB), Integer Frequency Offset, Orthogonal Frequency Division Multiplexing (OFDM), Threshold

References

[1] K. Fazel and S. Kaiser: Multi-carrier and spread spectrum systems (John Wiley and Sons, England (2003).

[2] J. J. van de Beek, M. Sandell, and P. O. Borjesson: IEEE Trans. Signal Process., Vol. 45 (1997), pp.1800-1805.

DOI: 10.1109/78.599949

[3] T. M. Schmidl and D. C. Cox: IEEE Trans. Comm., Vol. 45 (1997), pp.1613-1621.

[4] H. Nogami and T. Nagashima: Proceedings of IEEE PIRMC, Vol. 3 (1995), pp.1010-1015.

[5] K. Bang, N. Cho, H. Jun, K. Kim, H. Park, and D. Hong: IEEE Trans. Comm., Vol. 49 (2001), pp.1320-1324.