1. [1] J. Mitora, III, “Cognitive radio for flexible mobile multimedia communications,” Proc. MoMuC'99, pp.3-10, Nov. 1999.
2. [2] H. Harada, “Software defined radio prototype for toward cognitive radio communication systems,” IEEE DySPAN 2005, pp.539-547, Nov. 2005.
3. [3] N. Nakajima and T. Nojima, “Advanced RF technologies and future requirements for mobile communication base staions,” IEICE Trans. Electron., vol.E85-C, no.12, pp.1950-1958, Dec. 2002.
4. [4] G.-C. Liang, D. Zhang, C.-F. Shih, M.E. Johansson, and R.S. Withers, “High-power high-temperature superconducting microstrip filters for cellular base-station applications,” IEEE Trans. Appl. Supercond., vol.5, no.2, pp.2652-3655, June 1995.
5. [5] Z.-Y. Shen, C. Wilker, P. Pang, D.W. Face, C.F. Carter, III, and C.M. Harrington, “Power handling capability improvement of high-temperature superconducting microwave circuits,” IEEE Trans. Appl. Supercond., vol.7, no.2, pp.2446-2453, June 1997.