@INPROCEEDINGS {6913,
author={C. Ribeiro and M. J. F.-G. Garcia and V. P. G. Jiménez and A. Gameiro and A. G. Armada},
doi={},
booktitle={COST 289 Workshop on Spectrum and Power Efficient Broadband Communications},
title={Uplink channel estimation for multi-user OFDM-based systems },
year={2007},
month={April},
volume={--},
pages={-----} 
}