CAJ | 학술논문

有效的资源分配在协同通信中占有举足轻重的地位,鉴于此,该文研究了其中的中继节点选择和功率控制问题,提出了一种联合中继节点选择的博弈功率控制算法.它的主要思想是从各节点信噪比的角度建立收益函数,并具体针对源节点和中继节点建立不同的代价函数.在认为每个节点都"负责"的前提下,通过调整各节点功率达到各自效用的最大化,并依据中继节点发送功率的策略空间,优化参与协同的中继节点集合.同时,该文还对纳什均衡的性能进行了数学分析.从仿真结果可以看出,所提算法在复杂度可接受的前提下,能使各节点间的功率得到合理有效的使用,确能改善系统性能.
유효적자원분배재협동통신중점유거족경중적지위,감우차,해문연구료기중적중계절점선택화공솔공제문제,제출료일충연합중계절점선택적박혁공솔공제산법.타적주요사상시종각절점신조비적각도건립수익함수,병구체침대원절점화중계절점건립불동적대개함수.재인위매개절점도"부책"적전제하,통과조정각절점공솔체도각자효용적최대화,병의거중계절점발송공솔적책략공간,우화삼여협동적중계절점집합.동시,해문환대납십균형적성능진행료수학분석.종방진결과가이간출,소제산법재복잡도가접수적전제하,능사각절점간적공솔득도합리유효적사용,학능개선계통성능.
The performance in cooperative communication depends much on efficient resource allocation such as relay selection and power control. In this paper, a game-theoretical power control algorithm with relay selection is proposed. A payoff function is defined according to each node's SNR, and there are different pricing scheme between the source node and the relay nodes, because they play different roles in the networks. On the premise that these nodes are responsible, the goal is to maximize the utility function by adjusting the power. Then a choice among the relay nodes is maked, according to the power criterion. Furthermore, the property of the Nash equilibrium is analyzed . Simulation results show that the algorithm can encourage the nodes to employ their power efficiently, and improve the performances of the systems.