摘要
对于多用户多输入多输出系统,下行调度需要移动终端反馈大量的信道状态信息,随着用户数的增多,所需的反馈信息也剧增。由于信道状态信息与移动终端所处的位置相关,提出了基于"位置-信道状态信息数据库"的多用户调度算法,同时分析了该调度方法所需的反馈开销。理论和仿真结果表明:提出的调度方法无需反馈开销,且可以取得与基于无误差反馈的多用户调度方法相近的吞吐量性能。
For the multiple user multiple-input-multiple-output downlink system, a large amount of chan- nel state information from the mobile station （MS） is needed and the feedback load increases rapidly as the number of users increases. Because the channel state information is related to the location information of the mobile station, a multiple-user scheduling scheme is proposed on the basis of the database of position and channel state. Feedback load is also analyzed for the proposed scheduling method. Analysis and simu- lation results indicate that there is no need of feedback with our method, and the throughput performance of the recommended scheduling scheme is close to the maximum SINR based scheduling method.
出处
《通信技术》
2014年第5期523-526,共4页
Communications Technology
基金
东南大学移动通信国家重点实验室开放研究基金资助课题(No.2012D20)
南京信息工程大学大学生实践创新训练计划项目(No.201310300163)~~
