@INPROCEEDINGS {14972,
author={P. E. D. Cruz and P. F. Rosário and T. M. F. Alves  and A. Cartaxo},
booktitle={IEEE International Telecommunications Symp.},
title={Exhaustive Gaussian approach for performance evaluation of direct-detection OFDM systems employing square and cross QAM},
year={2014},
month={August},
volume={-},
pages={1-4} 
}
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