基于联合优化函数选择最优中继的研究

Study of Optimal Relay Selection Based on Joint Optimization Function

摘要: 该文介绍了基于联合优化函数进行最优中继选择的算法，并采用最优功率分配机制对源与中继进行功率的合理分配。总功率一定条件下，与采用的等功率分配机制相比，最优功率分配机制功率更合理地分配功率，节点网络寿命更长。MATLAB仿真结果表明采用最优功率分配机制的联合优化函数选择的中继，通信性能较好。

Abstract: This paper introduces the optimal relay selection algorithm based on joint optimization function, and it applies the optimal power distribution mechanism which can allocate the source and relay power reasonably. Under condition that the total power is limited, the proposed optimal power distribution mechanism, compared with the equal power distribution mechanism, can make the power distribution more effective, and nodes in the network have a longer lifetime. The simulation results based on MATALAB show that the relay, which uses the optimal power distribution mechanism based on the joint optimization function, has a better performance.