基于译码—转发的多中继协作节点选择方法

Multi-relays Selection Scheme in Cooperative Networks Based on Decode-and-Forward Protocol

由于协作通信技术能够抵抗信道衰落的影响,提供分集增益,成为目前研究热点之一。针对传统多中继译码转发协作通信中,所有潜在中继均参与协作从而导致系统的低资源利用率问题,提出了一种基于信道容量增益的中继节点选择策略。仿真结果表明,该策略只需选择一半的中继节点数就能获得和最优中继选择方法非常相近的系统性能,同时降低了系统的功率损耗和实现复杂度。

The cooperative communication technology could protect the anti-fading channel,and provide diversity gain,and thus has become the research focus.In order to avoid the low resource efficiency of all-participated cooperations in decode-and-forward cooperative communication networks,a new relays selection scheme based on channel capacity gain is proposed.The simulation results indicate that the proposed scheme with half-number relays selection could achieve same performance as the conventional schemes with optimal relays selection.