认知无线电网络节能效率调度建模研究

Research on energy efficiency scheduling modeling for cognitive radio networks

随着对环境问题的关注和绿色通信的兴起,认知无线电网络必须从节能效率角度考虑。为节能效率最大化制定的调度问题,是一个很难解决的非线性规划问题。为寻求替代计算更容易的解决方案,文章提出了一个多项式时间启发式算法,即节能效率启发式调度,从而使分配到每个空闲频率的认知用户,达到最高节能效率。

With the growing concern on environmental issues and the emergence of green commumcatlons paramgm, cogmuve ramo （CR） networks have to be considered from an energy efficiency perspective. It is a nonlinear programming （NLP） problem to formulate the scheduling problem as energy efficiency maximization problem and thereby hard to solve. In order to seek for easier solutions as alternate computation, this paper proposes a polynomial time heuristic algorithm, energy efficiency heuristic scheduler, which allocates each idle frequency to the CR that attains the highest energy efficiency at this frequency.