分布式MIMO系统限制因素的理论分析

Yanjie Dong, Gaofeng Cui, Yinghai Zhang, Weidong Wang
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引用次数: 0

摘要

多输入多输出(MIMO)技术显著提高了无线通信系统的容量。然而,由于不同数据流之间的功率不平衡、频率差异和时延差异等问题,分布式天线系统(DAS)的部署是不现实的。本文首先从理论上分析了MIMO系统的容量。然后分析了上述问题对MIMO系统性能的影响。最后,我们通过LTE链路级仿真来验证我们的假设并得出我们的结论。
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Theoretical analysis of limiting factors for distributed MIMO system
The multiple input multiple output (MIMO) technology increases the capacity of wireless communication system remarkably. However, it is unrealistic to deploy distributed antenna system (DAS) owing to several problems, including power imbalance, frequency difference and time delay difference between different data streams. In this paper, we analyze MIMO system capacity theoretically at first. Then we analyze effects of the problems above on MIMO system performance. At last, we conduct LTE link level simulation to verify our assumptions and draw our conclusions.
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