多天线蜂窝系统中机会调度性能分析  

Performance analysis of opportunistic scheduling in multiple antenna cellular systems

作　　者：雷俊[1] 周春晖[1] 赵明[1] 周世东[1] 姚彦[1] 罗晨 

机构地区：[1]清华大学电子工程系,微波与数字通信技术国家重点实验室,北京100084 [2]总参陆航驻北京地区军代室,北京100176

出　　处：《清华大学学报（自然科学版）》2010年第1期132-135,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家“八六三”高技术项目(2006AA01Z274);国家“九七三”重点基础研究项目(2007CB310608);新世纪优秀人才支持计划;清华-高通联合研究计划

摘　　要：基于Wyner蜂窝系统模型,研究了多天线蜂窝系统中机会调度的性能。利用极值理论框架,分析了存在邻小区干扰的情况下,各个小区独立使用机会调度所得到的信干噪比分布,推导出了平均容量的闭式解,分析了平均容量与每小区用户数之间的关系。理论分析和仿真结果均表明,各个小区被选择的用户收到的干扰信号与用户数无关;而机会调度所得到的多用户分集增益为lglgK,其中K为每小区的用户数。The performance of opportunistic scheduling in multiple antenna cellular systems was studied based on the Wyner cellular system model. Extreme value theory is used to analyze the signal to interference and noise ra o （SINR） of the selected user with independent opportunistic scheduling to derive a closed-form solution for the average capacity.The relationship between the average capacity and the number of users per ceil is also analyzed. Both analysis and simulation recults show that the interference signal power received at the selected users is independent of the number of users, whereas the multiuser diversity gain achieved by independent opportunistic scheduling in multiple antenna cellular systems is lglgK, where K is the number of users per cell.

关 键 词：无线通信 多天线蜂窝系统 机会调度 多用户分集 

分 类 号：TN92[电子电信—通信与信息系统]