@INPROCEEDINGS {11441,
author={A. Mahmoud  and M. J. N. Lima and A. Teixeira},
doi={},
booktitle={Symp. on Enabling Optical Networks - SEON},
title={Frequency Quadrupling without Optical Filter of OFDM},
year={2010},
month={June},
volume={},
pages={79-80} 
}