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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。
Based on the Wyner cellular system model, the performance of opportunistic scheduling in multi-antenna cellular systems is studied. Using the framework of extreme value theory, this paper analyzes the SINR distribution obtained by opportunistic scheduling in each cell independently in the presence of neighbor cell interference, deduces the closed form solution of the average capacity, analyzes the average capacity and the number of users per cell The relationship between. The theoretical analysis and simulation results show that the interference signal received by each user selected by each cell is independent of the number of users, while the multi-user diversity gain obtained by opportunistic scheduling is lglgK, where K is the number of users per cell.