Recently [1] proposed a dynamic spectrum leasing (DSL) paradigm for dynamic spectrum access in cognitive radio networks. In this paper, we formalize this concept by developing a more general game theoretic framework for the dynamic spectrum leasing and by carefully identifying requirements for the coexistence of primary and secondary systems via spectrum leasing. In contrast to hierarchical spe...

Spectrum scarcity and underutilization in wireless networks, arising due to traditional static spectrum allocation, have been of great concern since the past decade. The suboptimal use of spectrum motivates new wireless concepts where unlicensed users opportunistically access licensed spectrum using cognitive radio technology. A cognitive radio can change its operating parameter intelligently i...