?url_ver=Z39.88-2004&rft_id=10.1109%2FISWTA.2011.6089555&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=N.&rft.au=Armi%2C+N.&rft.aulast=Armi&rft.isbn=9781457714979&rft.date=2011&rft.title=Spectrum+sensing+and+throughput+performance+in+opportunistic+spectrum+access+system&rft.genre=proceeding