协同通信的节点选择问题是建立无线协同网络的一个关键问题,提出了一种AF-DSTC协同通信模型的分布式节点选择策略,通过对接收信噪比表达式的推导,以最大化接收端信噪比为基础,建立了一个仅与候选节点自身信道条件有关的选择函数,通过各候选节点的分布式运算来选择最优的协同节点。理论分析和仿真结果证明,该策略能够在性能上逼近理论最优的穷尽查找方法,并且能极大地减少实现复杂度。 The node selection problem of cooperative communication is a key issue to establish a wireless cooperative network. A distributed node selection strategy of AF-DSTC cooperative communication model is proposed. Based on the derivation of the received signal-to-noise ratio (SNR) Based on the noise ratio, a selection function is established, which is only related to the channel conditions of the candidate nodes. Through the distributed computing of each candidate node, the optimal cooperative node is selected. Theoretical analysis and simulation results show that this strategy can approximate the optimal exhaustive search method in performance and greatly reduce the implementation complexity.