@InProceedings{brandes2007ofdm,
	author = {Brandes, Sinja and Schnell, Michael and Berthold, Ulrich and Jondral, Friedrich K},
	title = {OFDM based overlay systems-design challenges and solutions},
	booktitle = {Proc. IEEE Int. Symposium on Personal, Indoor, and Mobile RadioCommun. (PIMRC)},
	year = {2007},
}