An efficient distributed algorithm for spectrum allocation in multi-hop cognitive radio networks

Spectrum sharing between the licensed primary user (PU) and secondary users (SUs) has been increasingly important. We consider a utility maximization framework for spectrum sharing among cognitive SUs and the PU in multi-hop cognitive radio networks. We propose an efficient distributed algorithm for solving the spectrum allocation problem. Extensive simulations have been performed and the results show that our algorithm achieves much better network utility than other compared algorithms.