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Relationship of the frequency offset estimation RMSE as a function of SNR for BPSK modulation

Method for enhancing the accuracy of frequency offset estimation in OFDM modulation based communication systems

E. V. Rogozhnikov, G. P. Babur

Abstract


The paper proposes a method for enhancing the accuracy of estimation of frequency offset for OFDM modulation based communication systems. An increase accuracy of the proposed method is achieved at the expense of combined use of pilot and information symbols of OFDM signal. The main factors determining the accuracy of proposed method were identified. Mathematical simulation of the proposed method was performed for a multipath radio wave propagation channel. The proposed method efficiency was shown in comparison with existing methods for the estimation of frequency offset. Advantages and disadvantages of existing and proposed methods were described. The relationships of the root-mean-square error of frequency offset estimation as a function of the signal-to-noise ratio were built for the proposed and existing methods. The attainable high accuracy of frequency offset estimation by employing the proposed method makes its use expedient in control and measuring equipment. Conclusions have been made regarding the simulation results obtained and the expediency of proposed method applications.

Keywords


frequency synchronization; frequency offset estimation; OFDM modulation; preamble; information symbols

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References


SESIA, S.; TOUFIK, I.; BAKER, M. LTE - The UMTS Long Term Evolution. New Jersey: John Wiley & Sons Inc., 2015.

KUMAR, A. Mobile Broadcasting with WiMAX: Principles, Technology, and Applications. CRC Press, 2014.

MAIKOV, D.Y.; DEMIDOV, A.Y.; KARATAEVA, N.A.; VOROSHILIN, E.P. “Frequency offset estimation for the Initial Ranging procedure in the mobile WiMax system,” Doklady TUSUR, v.24, n.2-1, p.59-63, 2011.

EIZMENDI, I.; VELEZ, M.; GУMEZ-BARQUERO, D.; MORGANE, J.; BAENA-LECUYER, V.; SLIMANI, M.; ZOELLNER, J. “DVB-T2: The second generation of terrestrial digital video broadcasting system,” IEEE Trans. Broadcasting, v.60, n.2, p.258-271, 2014. DOI: https://doi.org/10.1109/TBC.2014.2312811.

POLLET, T.; VAN BLADEL, M.; MOENECLAEY, M. “BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise,” IEEE Trans. Commun., v.43, n.2, p.191-193, 1995. DOI: https://doi.org/10.1109/26.380034.

SUYAMA, S.; SUZUKI, H.; FUKAWA, K. “An OFDM receiver employing turbo equalization for multipath environments with delay spread greater than the guard interval,” Proc. of 57th IEEE Semiannual Vehicular Technology Conf., VTC 2003-Spring, 22-25 Apr. 2003, Jeju, South Korea. IEEE, 2003, v.1, p.632-636. DOI: https://doi.org/10.1109/VETECS.2003.1207619.

MINN, H.; BHARGAVA, V.K.; LETAIEF, K.B. “A robust timing and frequency synchronization for OFDM systems,” IEEE Trans. Wireless Commun., v.2, n.4, p.822-839, 2003. DOI: https://doi.org/10.1109/TWC.2003.814346.

SCHMIDL, T.M.; COX, D.C. “Robust frequency and timing synchronization for OFDM,” IEEE Trans. Commun., v.45, n.12, p.1613-1621, 1997. DOI: https://doi.org/10.1109/26.650240.

MIR, Z.H.; FILALI, F. “LTE and IEEE 802.11p for vehicular networking: a performance evaluation,” EURASIP J. Wireless Commun. Networking, v.2014, n.1, p.89, 2014. DOI: https://doi.org/10.1186/1687-1499-2014-89.

VAN DE BEEK, J.J.; SANDELL, M.; BORJESSON, P.O. “ML estimation of time and frequency offset in OFDM systems,” IEEE Trans. Signal Processing, v.45, n.7, p.1800-1805, 1997. DOI: https://doi.org/10.1109/78.599949.

CHIN, W.-L. “ML estimation of timing and frequency offsets using distinctive correlation characteristics of OFDM signals over dispersive fading channels,” IEEE Trans. Vehicular Technol., v.60, n.2, p.444-456, 2011. DOI: https://doi.org/10.1109/TVT.2010.2102058.

SLADKIKH, V.A.; TOKAREV, A.B. “Increase of time-and-frequency synchronization accuracy in communication systems with orthogonal subcarriers,” Proc. of Int. Siberian Conf. on Control and Communications, SIBCON, 21-23 May 2015, Omsk, Russia. IEEE, 2015, p.1-4. DOI: https://doi.org/10.1109/SIBCON.2015.7147219.

BAUMGARTNER, S.; SHEHADEH, Y.E.H.; HIRTZ, G. “A modified symbol timing and frequency synchronization method based on cyclic prefix for OFDM systems,” Proc. of 25th Int. Conf. Radioelektronika, 21-22 Apr. 2015, Pardubice, Czech Republic. IEEE, 2015, p.331. DOI: https://doi.org/10.1109/RADIOELEK.2015.7129058.

JAIN, R. Channel Models. A Tutorial, Feb. 2007, WiMAX Forum AATG, 2007.

TOELTSCH, M.; LAURILA, J.; KALLIOLA, K.; MOLISCH, A.F.; VAINIKAINEN, P.; BONEK, E. “Statistical characterization of urban spatial radio channels,” IEEE J. Selected Areas Commun., v.20, n.3, p.539-549, 2002. DOI: https://doi.org/10.1109/49.995513.




DOI: https://doi.org/10.3103/S0735272718080022




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