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提出了一种新的多天线系统架构,该系统架构在接收端结合了智能天线技术和多输入多输出技术. 对上行智能天线-多输入多输出系统进行了研究,提出关于单用户智能天线-多输入多输出系统上行容量的联合优化问题. 对于等功率分配情形,当同一天线阵列的来自不同发送天线的到达角相同时,得到了上行容量的闭式解,当同一天线阵列的来自不同发送天线的到达角不同时,得到了上行容量的上限. 接着,对于一般情形,提出了一种求解容量优化问题的次优解方法. 最后,通过数值仿真比较了传统多输入多输出系统容量和智能天线-多输入多输出系统容量,仿真结果表明所提出的次优解方法是可行的.
A new multi-antenna system architecture is proposed, which integrates smart antenna technology and multiple-input multiple-output (MIMO) technology at the receiver.An uplink smart antenna, MIMO (Multiple Input Multiple Output) system is studied, In the case of equal power allocation, closed-loop solutions of uplink capacity are obtained when the same angle of arrival from different transmit antennas of the same antenna array is the same, and when the same antenna array receives signals from different transmitters The upper limit of the uplink capacity is obtained when the antenna’s arrival angle is different.Next, for the general case, a suboptimal solution method to solve the capacity optimization problem is proposed.Finally, the capacity and intelligence of the traditional multiple-input multiple-output system Antenna - MIMO system capacity, the simulation results show that the proposed suboptimal solution method is feasible.