@inproceedings{ZiMa11c,
	author = {Milan Zivkovic and Rudolf Mathar},
	title = "Joint Frequency Synchronization and Spectrum Occupancy Characterization  in {OFDM}-based Cognitive Radio Systems",
	pages = "1-6",
	booktitle = "{IEEE} Globecom 2011",
	address = {Houston, USA},
	month = Dec,
	year = 2011,
	hsb = {hsb999910119774},
	}