Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/04/01 Vol. E95-BNo. 4pp. 1249-1255 Type of Manuscript: Special Section PAPER (Special Section on Cognitive Radio and Heterogeneous Wireless Networks in Conjunction with Main Topics of CrownCom2011) Category: Keyword: dynamic spectrum access, overlap FFT, filter-bank, adjacent channel interference,