Seishi Hanaoka Masashi Yano Tetsuhiko Hirata Testbed System of Inter-Radio System Switching for Cognitive Radio. 14-21 2008 91-B IEICE Transactions 1 http://dx.doi.org/10.1093/ietcom/e91-b.1.14 db/journals/ieicet/ieicet91b.html#HanaokaYH08