Haykin S. Cognitive radio: brain-empowered wireless communications[J]. IEEE Journal on Selected Areas in Communications, 2005, 23(2): 201-220.
[2]
Goldsmith A, Jafar S A, Maric I, et al. Breaking spectrum gridlock with cognitive radios: an information theoretic perspective[J]. Proceedings of the IEEE, 2009, 97(5): 894-914.
[3]
Manna R, Louie R H-Y, Li Yonghui, et al. Cooperative spectrum sharing in cognitive radio networks with multiple antennas[J]. IEEE Transaction on Signal Processing, 2011, 59(11): 5509-5522.
[4]
Han Yang, Pandharipande A, Ting S H. Cooperative decode-and-forward relaying for secondary spectrum access[J]. IEEE Transaction on Wireless Communication, 2009, 8(10): 4945-4950.
[5]
Han Yang, Ting S H, Pandharipande A. Spectrum sharing protocol with selective relaying system[J]. IEEE Transaction on Communication, 2012, 60(1): 62-67.
[6]
Zou Yulong, Zhu Jia, Zheng Baoyu,et al. An adaptive cooperation diversity scheme with best-relay selection in cognitive radio networks[J]. IEEE Transaction on Signal Processing, 2010, 58(10): 5438-5445.
