Dynamic spectrum allocation algorithm of joint power control in cognitive radio networks
Di Wu · Jisuanji yingyong yanjiu · 2010
This paper focus on the dynamic spectrum allocation algorithms in cognitive radio networks,and based on MIS,proposed an improved dynamic spectrum allocation algorithm which took the power control technique into account. Joint power control mechanism could not only avoid interference between users,but also avoid interference to link which was already allocated a channel,this in turn,meeted more users'transmission requirements and reduced the energy consumption of nodes. In the proposed algorithm,allocation begins with the MIS,that allows to assign a particular channel simultaneously to a set of links with no interference between each other,at the same time the algorithm gives attention to fairness among uses during re-source allocation,so that the algorithm can cut back the number of allocation and reduce communication and information ex-change among users. Simulation results show that command satisfied rate and fairness of the improved dynamic spectrum allo-cation algorithm are better than other those of other algorithms.