Adaptive Channel Estimation in OFDM System Using Cyclic Prefix (Kalman Filter Approach)
DOI: 10.4236/ijcns.2009.29099   PDF    HTML     6,518 Downloads   12,047 Views   Citations


OFDM is a promising technique for high data rate transmission and the channel estimation is very important for implementation of OFDM. In this paper, cyclic prefix (CP) can be used as a source of channel information which is originally used to reduce inter symbol interference (ISI). Based on this CP observation, we propose two cross coupled dual Kalman filters to track the channel variations without additional training sequences. One Kalman filter AR parameter estimation and another for fading channel estimation.

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P. V. NAGANJANEYULU and K. SATYA PRASAD, "Adaptive Channel Estimation in OFDM System Using Cyclic Prefix (Kalman Filter Approach)," International Journal of Communications, Network and System Sciences, Vol. 2 No. 9, 2009, pp. 852-856. doi: 10.4236/ijcns.2009.29099.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] R. Steele, “Mobile radio communications,” New York: IEEE Press, 1992.
[2] X. W. Wang and K. J. R. Liu, “Adaptive channel estimation using cyclic prefix in multicarrier system,” IEEE Communication Letters Magazines, Vol. 3, pp. 291–293, October 1999.
[3] A. Jamoos, D. Labarre, E. Grivel, and Najim, “Two cross coupled Kalman filters for joint estimation of MC-DS- CDMA fading channels and their corresponding autoregressive parameters,” Proceedings of EUSIPCO, Antalya, Turkey, September 4–8, 2005.
[4] M. K. Tsatsanis, G. B. Giannakis, and G. Zhou, “Estimation and equalization of fading channels with random coefficients,” Signal Process, Vol. 53, pp. 211–229, 1996.
[5] A. Jamoos, J. Grolleau, and E. Grivel, “Kalman vs H∞ algorithms for MC-DS-CDMA channel estimation with or without a priori AR modelling,” IEEE Multicarrier Spread Spectrum, Springer Verlag, pp. 427–436, 2007.
[6] I. R. Petersen and A. V. Savkin, “Robust Kalman filtering for signals and systems with large uncertainties,” Boston, MA: Birkh?user, 1999.
[7] Y. Li, L. J. Cimini, and N. R. Sollenberger, “Robust channel estimation for OFDM systems with rapid dispersive fading channels,” IEEE Transactions on Communications, Vol. 46, pp. 902–915, July 1998.

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