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| A Two Dimensional Processing Based Channel Estimation Method for Wireless OFDM Systems |
| Shang Zheng; Zhu Jin-kang |
| PCN & SS Lab., Univ. of Sci. & Tech. of China Hefei 230027 China |
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Abstract This paper proposes a novel channel estimation method for wireless Orthogonal Frequency Division Multiplexing (OFDM) systems. The method can significantly reduce the Inter-Carrier Interference (ICI) and additive white Gaussian noise by processing the received pilots both in multipath spread domain and Doppier spread domain. Furthermore, the method is adaptive in the sense that the cutoff frequency of the filter in the Doppier spread domain is designed dynamically to match the Signal-to-Noise Ratio (SNR). Computer simulation results demonstrate that the proposed method performs well at various Doppier frequency shifts.
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Received: 04 November 2003
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2005, Vol. 27 
