多跳协作中继网络的能量分配及路由算法

Power Allocation and Routing Algorithm in Multihop Cooperative Relaying Networks

为了减少无线多跳网络的能量消耗,提出了一种协作路由算法.在传统非协作路由的基础上,通过译码-转发与放大-转发混合的协作中继方式减少路由长度.根据信道状态信息,推导了满足源节点和目的节点之间信道容量的前提下,节点所需的最小发射功率.结合功率分配,提出了基于路由最小功率的协作路由算法及实现方式.仿真实验结果表明,该能量分配方式和路由选择算法在保持低功耗的同时,降低了数据误码率,提高了节点的通信可靠性和能量利用率.

In order to reduce the energy consumption of wireless multihop network, a type of cooperative routing algorithm is proposed. Compared to the conventional routing algorithm, the cooperative routing algorithm adopts a form of decode-forward and amplify-forward scheme named hybrid relaying protocol to reduce the route length. To achieve the required channel capacity from source to destination, the minimum transmitting power is deduced according to the channel state information. Finally, the routing algorithm and its implementation are proposed based on minimum power consumption. The simulation shows that the power allocation and the routing algorithm reduce the symbol error rate at the expense of low power consumption, which enhances the communication reliability and energy efficiency.