无线协作网络中基于数据传输需求的分布式功率控制

Distributed Power Control Based on Data Transmission Requirement in Wireless Cooperative Networks

在未来无线通信网络中,协作通信的性能依赖于通信资源的有效分配,比如中继选择和功率控制等。在本文中,我们建议了一个分布式买者和卖者博弈理论框架,以满足用户链路质量需求为基础,解决多用户协作通信中最优化中继选择和功率控制。本文联合考虑了源节点和中继节点的功率分配,进而优化源节点和中继节点的收益。这里提出的方法不仅有助于源节点找到相对位置较好的中继节点以及在源和中继之间进行最优化功率分配从而最小化源节点的支付,而且有助于相互竞争的中继节点提供优化的价格以最大化它们各自的收益。此外,这里的优化价格可以仅由局部信道状态信息和其他节点的能量价格决定。如果获得的中继节点总数增加,全网的能量消耗会更低。

In the future wireless communication networks,the performance in cooperative communication depends on careful resource allocation such as relay selection and power control.In this paper,we propose a distributed buyer and seller gametheoretical framework over multi-user cooperative communication networks to achieve optimal relay selection and power allocation based on users link quality requirement.The power of the source nodes and relay nodes are jointly considered to benefit the utilities of source nodes and the relay nodes in this paper.The proposed approach not only helps the source find the relays at relatively better locations and allocates an optimal amount of power among the source node and the relays for minimization the source nodes payment,but also helps the competing relays maximize their own utilities by asking the optimal prices.Furthermore,the optimal prices can be decided by the local channel state information（CSI） and price per unit power of other relays.If the total number of available relay nodes increases,the energy consumption of the whole networks can be decreased.