"Hiromasa Uchiyama,Kenta Umebayashi,Takeo Fujii,F.Ono,K.Sakaguchi,Yukihiro Kamiya,Yasuo Suzuki","Study on soft decision based cooperative sensing for cognitive radio networks",,"IEICE Transaction on Communications",,"vol. E91-B","no. 1","pp. 95-101",2008,Jan.