Three dimensional combined spectrum allocation algorithm in cognitive radio system
XIE Yu-peng, TAN Xue-zhi, MA Lin, HUANG Hao-qin, TIAN Ye, WU Hai-yan
Systems Engineering and Electronics . 2014, (11): 2303 -2307 .  DOI: 10.3969/j.issn.1001-506X.2014.11.30