认知多用户多中继协作蜂窝网络最优共同功率和频谱分配

Jointly optimal power and spectrum allocation method for cognitive multi-user multi-Relay cooperation cellular network

研究了基于认知无线电的多用户多中继协作蜂窝网络最优功率和频谱共同分配问题,建立了基于发射功率向量和中继结点频谱分配向量为参数的网络最优功率和频谱最优化分配模型,应用罚函数法对提出的最优化分配模型进行求解,提出了一种多认知用户多中继协作蜂窝网络最优功率和频谱共同分配方法。仿真验证了提出的方法正确性和有效性,仿真结果表明提出的分配方法能对发射功率和中继结点频谱进行最优分配,保障每个结点获得最优吞吐量的基础上最大化网络总的吞吐量。

The jointly optimal power and spectrum allocation of multi-user multi-relay cellular network based on cognitive ra- dio are investigated. On the basis of the transmit power vector and relay node＇ s spectrum allocation vector, the optimization model of the jointly power and spectrum allocation is established. The proposed optimization model is solved by penalty function method, and then a new jointly optimal power and spectrum allocation method of multi-user muhi-relay cellular network based on cognitive ra- dio is presented. Simulation validates the proposed method＇ s correctness and efficiency. The simulation result shows that the pro- posed method can not only lead to the optimal allocation of the transmit power and relay node＇ s spectrum but also ensure the network throughput＇ s maximization on the basis of the node in the network achieving the optimal throughput.