[1] Haykin S. Cognitive radio: Brain-empowered wireless communications[J]. Selected Areas in Communica-tions, IEEE Journal on, 2005, 23(2): 201-220. [2] Mitola J, Maguire G Q. Cognitive radio: making software radios more personal[J]. IEEE Pers Commun, 1999, 6(6): 13-18. [3] Meshkati F, Poor H V, Schwartz S C. Energy-efficient resource allocation in wireless networks[J]. IEEE Signal Processing Magazine, 2007, 24(3): 58-68. [4] Ziaul Hasan, Gaurav Bansal, Ekram Hossain, et al. Energy-efficient power allocation in OFDM-based cognitive radio systems: a risk-return model[J]. IEEE Trans on Wireless Commun, 2009, 8(12):6078-6088. [5] Wu Yuan, Tsang Danny H K. Energy-efficient spectrum sensing and transmission for cognitive radio system[J]. Communications Letters, IEEE, 2011,5(12):545-547. [6] Li Liying, Zhou Xiangwei, Xu Hongbing, et al. Energy-efficient transmission in cognitive radio networks[J]. Consumer Communications and Networking Conference (CCNC), 2010(1):504-513. [7] Kang Xin, Liang Yingchang, Garg H K, et al. Sensing-based spectrum sharing in cognitive radio networks[J]. IEEE Trans on Vehicular Technology, 2009, 58(8): 4649-4654. [8] Liang Yingchang, Zeng Yonghong, Edward C Y Peh, et al. Sensing-throughput tradeoff for cognitive radio networks[J]. Wireless Communications, IEEE Transactions on, 2008,7(4):1326-1337. [9] Qiu Tao, Xu Wenjun, Song Tao, et al. Energy-efficient transmission for hybrid spectrum sharing in cognitive radio networks[J]. IEEE Vehicular Technology Conference, 2011(5):1-5. [10] 唐菁敏, 罗涛, 乐光新. 感知系统中最优感测时间和功率分配[J]. 北京邮电大学学报, 2011, 34(4): 89-92. Tang Jingmin, Luo Tao, Yue Guangxin. Optimum sensing time and power allocation for cognitive systems[J]. Journal of Beijing University of Posts and Telecommunications, 2011, 34(4): 89-92. [11] 徐任晖,陈明,张剑峰,等. 认知无线电OFDM系统的最优频谱感知周期选择[J]. 北京邮电大学学报, 2011, 34(3): 98-102. Xu Renhui, Chen Ming, Zhang Jianfeng, et al. Sensing period optimization for OFDM based cognitive radio[J]. Journal of Beijing University of Posts and Telecommunications, 2011, 34(3): 98-102. [12] 陈宝林. 最优化理论与方案[M]. 北京:清华大学出版社,2005. |