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OFDM is a promising technique over mobile wireless channels. Diversity and iterative estimation play an important role in improving the performance of OFDM systems. In this article, we develop a turbo OFDM system which employs an interleaver at the transmitter to permute information and introduce additional temporal frequency domain diversity. At the receiver, a combination of channel estimation of the MMSE and linear interpolation is proposed to provide the channel parameters. Computer simulation results are shown and prove the system to be effective.
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th (Volume:1 )
Date of Conference: 26-29 Sept. 2004