A Data Aided Estimation Algorithm of Decimal Frequency Offset for OFDM System

Abstract:

In recent years, orthogonal frequency division multiplexing (OFDM) technology has drawn widespread attention for its high spectral efficiency, and has doing better on combating multipath interference than traditional technology.The reason why OFDM system has high spectral efficiency is that it takes advantage of the orthogonality between sub-carriers,characteristic of which can eliminate interference of each subcarrier even when the spectrum of them overlapped.It is the demanding of orthogonality between subcarriers to demodulate signals that makes OFDM system extremely sensitive to frequency offset. Even a little frequency offset can bring inter-carrier interference.This paper studied the mechanism of formation of interference among sub-carriers, and proposed a frequency offset estimation algorithm by changing the structure of data symbols so that the data symbols can act as training sequence.The simulation results show that the proposed algorithm performs better than S.C algorithm in many aspects, such as MSE, BER, Constellation and so on.

• Periodical: Advanced Materials Research (Volume 902)
• Pages: 385-391
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.902.385
• Online since: February 2014
• Authors: Yun Tang*, Feng Zheng, Hang Liu, Tian Qi Miao
• Keywords: Decimal Frequency Offset Estimation, Frequency Compensation, Frequency Synchronization, High-Speed Mobile, Multipath Channel, OFDM System

References

[1] J. A. C. Bingham, Multicarrier modulation for data transmission: An idea whose time has come, IEEE Commun. Mag., vol. 28, p.5–14, May (1990).

DOI: 10.1109/35.54342

[2] W. Y. Zou and Y. Wu, COFDM: An overview, IEEE Trans. Broad-casting, vol. 41, p.1–8, Mar. (1995).

[3] Roman, B. Wassell, I. Chatzigeorgiou, I., Scalable Cross-Layer Wireless Access Control Using Multi-Carrier Burst Contention, IEEE Selected Areas in Communications, Volume: 29, Issue: 1, January 2011, p.113–128.

DOI: 10.1109/jsac.2011.110112

[4] Mehedy, L. Bakaul, M. Nirmalathas, A, 115. 2 Gb/s optical OFDM transmission with 4 bit/s/Hz spectral efficiency using IEEE 802. 11a OFDM PHY, , OECC 2009. 14th, 13-17 July 2009, pp.1-2.

DOI: 10.1109/oecc.2009.5214251

[5] Hou-Shin Chen. Wen Gao; Daut, D. G, Spectrum Sensing for OFDM Systems Employing Pilot Tones and Application to DVB-T OFDM, " IEEE International Conference on ICC , 08, 19-23 May 2008, p.3421 – 3426.

DOI: 10.1109/icc.2008.643

[6] Poggioni, M. Rugini, L.; Banelli, P, A Novel Simulation Model for Coded OFDM in Doppler Scenarios: DVB-T Versus DAB, " IEEE International Conference on ICC , 07. p.5689 – 5694.

DOI: 10.1109/icc.2007.943

[7] Man Cheuk Ng, From WiFi to WiMAX: Techniques for High-Level IP Reuse across Different OFDM Protocols, Formal Methods and Models for Codesign, 2007. MEMOCODE 2007. 5th IEEE/ACM International Conference on. May 30 2007-June 2 2007. p.71 – 80.

DOI: 10.1109/memcod.2007.371247

[8] Capozzi, F. Downlink Packet Scheduling in LTE Cellular Networks: Key Design Issues and a Survey, IEEE Communications Surveys & Tutorials, Second Quarter 2013, Volume: 15, Issue: 2, p.678 – 700.

DOI: 10.1109/surv.2012.060912.00100

[9] T. Pollet, M. van Bladel, and M. Moeneclaey, BER sensitivity of OFDM systems to carrier frequency offset and wiener phase noise,: IEEE Transactions on Communications, vol. 43, Feb. 1995, pp.191-193.

DOI: 10.1109/26.380034

[10] Y. Zhao and S.G. Haggman, Sensitivity to Doppler shift and carrier frequency errors in OFDM systems --- the consequences and solutions, in Proc. IEEE Vehicular Technology Conference, (Atlanta, GA, U.S.A. ), Apr. 1996 , pp.1564-1568.

DOI: 10.1109/vetec.1996.504021

[11] Youping Zhao, Analysis of the impact of Doppler spread on OFDM-based next-generation high-speed rail broadband mobile communications, Communication Technology and Application (ICCTA 2011), IET International Conference on, 14-16 Oct. 2011, p.116.

DOI: 10.1049/cp.2011.0642

[12] Qiang Liu, Preliminary analysis of static marking guide system of high-speed rail, Computer-Aided Industrial Design & Conceptual Design (CAIDCD), 2010 IEEE 11th International Conference on, 17-19 Nov. 2010, Volume: 2, p.77 – 1080.

DOI: 10.1109/caidcd.2010.5681845

[13] Jan-Jaap Van de Beek, ML Estimation of Time and Frequency Offset in OFDM system, IEEE Transaction on signal Processing, 45(7), July. 1997: 1800-1805.

DOI: 10.1109/78.599949

[14] P.H. Moose. A technique for Orthogonal Frequency Division Multiplexing frequency offset correction, ', IEEE Trans. Commun. Vol. 42. No. IO, Oct. 1994, pp.2908-2914.

DOI: 10.1109/26.328961

[15] Schmidl T.M., Cox D.C., Robust frequency and timing synchronization for OFDM[J]. IEEE.