Distributed Multichannel Power Allocation Algorithm for Spectrum Sharing Cognitive Radio Networks

In this paper, we study the distributed multichannel power allocation (MCPA) problem for the spectrum sharing cognitive radio networks (CRNs), where secondary transceiver pairs share the same spectrum with the primary system. The problem is formulated as a non-cooperative game with coupled constraints to address the interference temperature restrictions imposed by the primary system. Existence and uniqueness of the Nash Equilibrium (N.E.) for this coupled constraints MCPA game are investigated. Distributed MCPA algorithm is proposed to approach the unique N.E. Simulation results are obtained to verify the validity of the proposed algorithm.