Joint Time-domain Tracking of Channel and Frequency Offset for Ofdm Systems
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چکیده
This paper addresses the problem of joint channel and frequency offset estimation and tracking for OFDM systems. The proposed method is based on Ext,ended Kalman filtering. The channel taps and the frequency offset are estimated in time-domain while equalization is performed in frequency domain. Simulation results demonstrate accurate 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.
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تاریخ انتشار 2004