最小中断率协作策略和功率分配

Outage Minimization Cooperative Strategy and Power Allocation

在源节点和中继节点总功率一定条件下,提出一种基于有限反馈的中断率最小的协作策略.在信道增益坐标平面内,对于解码转发和直接发射,文中分别给出了等功率和最优功率分配时系统中断率最小的发射模式区域.根据所提出的算法,目的节点只需查看当前信道状态所属的发射区域,并反馈1个发射参数到源节点和中继节点.相比于传统策略,本文提出的策略准确给出了任何信道增益下中断率最小的发射模式,并极大精简了反馈量和计算复杂度.

Based on the limited feedback,proposed an outage minimization cooperative strategy for a cooperative system where the total power of the source and the relay are subject to an average constraint.For decode-and-forward and direct transmission modes,on the channel gain coordinates plane,we derive the outage minimization transmission mode region under equal and optimum power allocation,respectively.According to the proposed algorithm,the destination just checks the current channel state information to see which transmission region it belongs to and then feedback a transmission parameter to the source and the relay.Compared to the traditional algorithms,the proposed strategy can precisely decide the outage minimization transmission mode under any given channel state and can also substantially reduce feedback rate and computation complexity.