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针对多点协作单用户联合处理(CoMP SU JP)频谱分配问题,提出了基于改进粒子群优化的频谱分配算法.以同时最大化边缘用户性能和系统整体性能为优化准则,引入边缘用户权重因子,建立了CoMP SU JP频谱分配的有约束非线性0-1规划模型;并针对该模型设计了基于改进粒子群优化的频谱分配算法.仿真结果表明:本算法通过控制边缘用户权重因子可以有效地平衡边缘用户和系统整体的性能,在应用上更具有灵活性;在权重因子设置合理的情况下与现有算法相比,本算法对边缘用户和系统整体的吞吐量均有较大提升.
In order to solve the spectrum allocation problem of CoMP SU JP, this paper proposes an improved spectrum allocation algorithm based on improved particle swarm optimization, which maximizes both the performance of the edge user and the overall performance of the system as the optimization criterion, introduces the edge user weighting factor, A constrained nonlinear 0-1 programming model for spectrum allocation of CoMP SU JP is established, and a spectrum allocation algorithm based on improved PSO is designed for the model.The simulation results show that this algorithm can effectively balance the edge user weighting factors The performance of the edge users and the system as a whole is more flexible in application. Compared with the existing algorithms, the throughput of the edge user and the whole system is greatly improved when the weight factor is set reasonably.