Preamble-assisted channel estimation in OFDM-based wireless systems

Authors:
Cheong-Hwan Kim;Dae-Seung Ban;Yong-Hwan Lee
Affiliations:
School of Electrical Engineering and INMC, Seoul National University, Seoul, Korea;School of Electrical Engineering and INMC, Seoul National University, Seoul, Korea;School of Electrical Engineering and INMC, Seoul National University, Seoul, Korea
Venue:
RWS'09 Proceedings of the 4th international conference on Radio and wireless symposium
Year:
2009

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Low complexity ML detection for other-cell interference mitigation in mobile WiMAX systems

MWS'09 Proceedings of the 2009 IEEE conference on Mobile WiMAX

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Abstract

This paper considers the improvement of CSI estimation accuracy in OFDM-based wireless packet transmission systems by exploiting the preamble signal as well as the pilot signal. The CSIs respectively estimated from the received preamble and pilot signal are combined according to the channel correlation between the preamble and the pilot signaling. The combining weight is analytically determined to minimize the mean squared error. Simulation results show that the proposed scheme is quite.