| With the rapid development of mobile communications,the demand of use rs for higher data transmission rate,high capacity and high quality of service(Quality-of-Service)is gradually increasing.Furthermore,due to the limitation o f current spectrum resources for mobile communication,the problem of spectru m resource scarcity has become increasingly prominent.D2D(Device-to-Device)green terminal direct communication technology allowing users communicate with each other directly without through the base station brings a lot of benefi ts such as lower power consumption,lower latency,higher data rate and higher spectrum efficiency and so on.Therefore,researchers introduce D2 D communi cation technology to the traditional cellular network to improve system capacity,maximize the utilization of limited spectrum resources.Though D2 D communi cation can bring a lot of benefits through reusing channel resources of cellular users,it also brings complex interference problems.In addition,the mobile co mmunication terminals are powered by limited capacity batteries and consume r apidly,which brings another difficult energy efficiency problem.In terms of above two issues,this paper studies the problem of D2 D com munication resource allocation maximizing energy efficiency.According to the number of D2 D users reusing the cellular channels,this paper proposes one-toone,many-to-one resource reusing mode.In order to further enhance the user experience,this paper considers all the users' personal preferences,and establis hes the preference lists of users exploiting iterative power allocation algorithm,nonlinear fractional programming,Lagrange dual decomposition and KKT condi tion to maximize energy efficiency,the establishment of user preference list.T hen,based on the method of matching theory,this paper proposes two stable matching algorithms for the two resource reusing modes respectively,which not only obtain stable matching,but also maximize the energy efficiency of the n etwork. |
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