机构地区: 华中师范大学物理科学与技术学院电子与信息工程系
出 处: 《通信技术》 2008年第5期44-46,共3页
摘 要: 文中针对正交空时编码的多用户MIMO系统,分析并比较了两种多用户调度方案的性能。第一种方案是基站在一个时隙内选择信噪比最大的用户进行通信,第二种方案是基站在一个时隙同时选择多个信噪比大的用户进行通信。文中对两种方案的容量都作了理论推导和仿真比较。仿真结果显示,前一种方案性能好于第二种方案,但是第二种方案可以同时服务多个用户。 In this paper, the performances of two multiuser scheduling schemes for multiuser MIMO systems based on orthogonal space-time block codes are analized. The first scheme is that the BS selects only one user with the largest SNR at a time slot while the second scheme is that the BS selects multiple users with the largest SNRs at a time slot. Furthermore, these two schemes are compared by theory analysis and simulation. Simulation results indicate that the first scheme exhibits significant performance gains ov...