… allocation model can be inherently seen as an optimization problem, we propose to use
evolutionary algorithms for cognitive radio spectrum allocation … radio spectrum allocation …

… conventional CSMA based spectrum allocation technique and our proposed method of
HMM based dynamic spectrum allocation. In CSMA based spectrum allocation scheme that we …

… spectrum allocation and scheduling problems in cognitive radio wireless networks with the
objectives of achieving fair spectrum … In this section, we will first introduce a novel graph model…

… To develop a model indepently of the spectrum assignment policy, we consider that every
policy can be represented as a matrix M={mj) for i,j=O ... 2N.I, where the elements m,,) are 1 (or …

… spectrum brokers. We address this issue in this paper by designing efficient spectrum allocation
… start by redefining the interference model and the concept of valid spectrum allocation. …

… model for spectrum allocation in CR networks in section III. And finally, after presenting the
simulation results to verify the impact of new proposed model … model for spectrum allocation …

… We model the spectrum opportunity in a time-frequency division manner and the spectrum
allocation … • We present a model of PO’s spectrum in a novel way considering the problem of …

… In this first model, we associate arcs with demands to define the paths, and we also model
the first and last slot allocated to each demand. To this end, for each demand \(d\in D\) and …

… the cognitive radio spectrum allocation models based on game … state of the art of spectrum
allocation based on game theory. In … considered the wireless spectrum allocation model of two …

… spectrum allocation strategy proposed in this paper. Next, to avoid persistent collisions with
neighboring femtocells in their allotted spectrum, … We term this spectrum access strategy as F-…