Competitive interference-aware spectrum access in cognitive radio networks

—Cognitive radio networks provide the capability to share the wireless channel with licensed (primary) users in an opportunistic manner. Primary users have a license to operate in a certain spectrum band; their access can only be controlled by the Primary Operator and is not affected by any other unlicensed (secondary) user. On the other hand, secondary users (SUs) have no spectrum license, and they attempt to exploit the spectral gaps left free by primary users. This work studies the spectrum access problem in cognitive radio networks from a game theoretical perspective. The problem is modeled as a non-cooperative spectrum access game where secondary users access simultaneously multiple spectrum bands left available by primary users, optimizing their objective function which takes into account the congestion level observed on the available spectrum bands. As a key innovative feature with respect to existing works, we model accurately the interference between SUs, capturing the effec...

• Type: Journal
• Year: 2010
• Where: WIOPT
• Authors: Jocelyne Elias, Fabio Martignon, Antonio Capone, Eitan Altman
• Keywords: Computer Networks, Primary Users, Spectrum, Spectrum Bands, WIOPT 2010