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Joint time-domain tracking of channel and frequency offset for OFDM systems

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3 Author(s)
Roman, T. ; Signal Process. Lab., Helsinki Univ. of Technol., Finland ; Enescu, M. ; Koivunen, V.

This paper addresses the problem of joint channel and frequency offset estimation and tracking for OFDM systems. The proposed method is based on extended Kalman filtering. The channel taps and the frequency offset are estimated in the time-domain while equalization is performed in the frequency domain. Simulation results demonstrate accurate the tracking capability of the algorithm in scenarios when the channels are time-frequency selective. The frequency offset may be slowly or abruptly changing in time.

Published in:

Signal Processing Advances in Wireless Communications, 2003. SPAWC 2003. 4th IEEE Workshop on

Date of Conference:

15-18 June 2003