Date Added: May 2011
Cognitive Radio (CR) is a promising paradigm to achieve efficient utilization of the limited spectrum resource by allowing the unlicensed users to access the licensed spectrum, and Dynamic Spectrum Access (DSA) is one of the fundamental functions of CR networks. Market-driven spectrum auction has been recognized as an effective way to achieve DSA. In spectrum auction, the Primary spectrum Owners (POs) act as auctioneers who are willing to sell idle spectrum bands for additional revenue, and the Secondary Users (SUs) act as bidders who are willing to buy spectrum bands from POs for their services. However, conventional spectrum auction designs are restricted within the scenario of single auctioneer.