虚拟多输入多输出(VMIMO)系统由多个单天线的移动终端配成一组,占用相同的时频资源传输信息,关键技术之一是用户配对算法。基于传统的配对算法无法兼顾到配对用户间远近效应与系统吞吐量问题,提出了一种基于信噪比(SNR)门限融合调度的上行VMIMO配对算法。仿真结果表明,所提算法在保证低信噪比用户服务质量的基础上提高了系统吞吐量,同时可以降低对相邻小区的干扰,减小系统丢包率,更适合实际系统的应用。
In the virtual multiple-input multiple-output concept,multiple single-antenna mobile station could be grouped together to transmit signals at the same time/frequency resources.One of the key techniques is user pairing algorithm.Considering that the traditional pairing algorithms could not achieve the tradeoff between paired users near-far effect and system throughput.In this paper,a novel pairing scheduling scheme based on SNR threshold converged with the system packet scheduling scheme is proposed.Simulation results show that the proposed scheme improves the system capacity without reducing the quality of service for the users at the cell edge.Meanwhile,this scheme it also reduces the interference on adjacent cells and the packet-loss rate of the system,thus is suitable for the applications in real system.