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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。
This paper analyzes and compares the performance of two multiuser scheduling schemes for orthogonal space-time coding multi-user MIMO systems. The first solution is that the base station selects the user with the largest signal-to-noise ratio for communication in one time slot. The second solution is that the base station selects multiple users with large signal-to-noise ratio to communicate in one time slot. In this paper, the theoretical solutions and simulations of both schemes are made. Simulation results show that the former scheme performs better than the second scheme, but the second scheme can serve more than one user at the same time.