1Mitola Joseph, Maguite Gerald Q. Cognitive radio: Making software radios More Personal [ J ]. IEEE Personal Communications, 1999, 6(4) :13 -18.
2Haykin S. Cognitive Radio:Brain-Empowered Wireless Communica- tions [ J ]. IEEE Journal on Selected Areas in Communications, 20005, 23(2) :201 -220.
3Sahai A,Hoven N,Tandra R. Some fundamental limits in cognitive radio[C]. Allerton Conf. on Commun.. Control and Computing, 2004.
4Digham F, Alouini M, Simon M. On the energy detection of un- known signals over fading channels [ J ]. Proc. IEEE 1CC 2005, 2003,5:3575 - 3579.
5Gelbert X,Sallent 0 L,Perez-Romer 0 J,et al. Spectrum sharing in cognitive radio networkswith imperfect sensing:a discrete-time Mark- ov model[ J]. Computer Networks,2010.
6Mitola J. Cognitive radiol Dissertation] [ D ]. Stockholms, Sweden: Royal Institute of Technology ( KTH), 2000.
7Qing z, Sadler B M. A survey of dynamic spectrum access: signal rocessing, networking, and regulatory policy [ J ]. IEEE Signal Pro- cessing Magazine, 2007,24(3 ) :79 - 89.