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arXiv 1602.07022cs.ITmath.IT
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空间受限大规模线性接收机MIMO的频谱效率

On the Spectral Efficiency of Space-Constrained Massive MIMO with Linear Receivers

Jiayi Zhang, Linglong Dai, Michail Matthaiou, Christos Masouros, Shi Jin

摘要:

在本文中,我们调查的频谱效率(SE)的大规模多输入多输出(MIMO)系统与大量的天线在基站(BS)占物理空间的限制。与大量的相关文献,它认为固定的元件间的间距,我们详细说明了一个实际的拓扑结构,其中在一个固定的总空间中的天线的数量的增加引起天线间的距离成反比的减少。对于这种情况下,我们推导出精确和近似的表达式,以及简化的上/下限,SE的最大比合并(MRC),迫零(ZF)和最小均方误差接收机(MMSE)接收机。特别是,我们的分析表明,MRC接收机是空间受限的大规模MIMO拓扑结构的非最佳。另一方面,ZF和MMSE接收机仍然可以随着BS天线的数量变大而提供增加的SE。数值结果证实了我们的分析,并显示了天线的数量,用户的数量,和总的天线阵列空间上的总和SE性能的效果。

英文摘要:

In this paper, we investigate the spectral efficiency (SE) of massive multiple-input multiple-output (MIMO) systems with a large number of antennas at the base station (BS) accounting for physical space constraints. In contrast to the vast body of related literature, which considers fixed inter-element spacing, we elaborate on a practical topology in which an increase in the number of antennas in a fixed total space induces an inversely proportional decrease in the inter-antenna distance. For this scenario, we derive exact and approximate expressions, as well as simplified upper/lower bounds, for the SE of maximum-ratio combining (MRC), zero-forcing (ZF) and minimum mean-squared error receivers (MMSE) receivers. In particular, our analysis shows that the MRC receiver is non-optimal for space-constrained massive MIMO topologies. On the other hand, ZF and MMSE receivers can still deliver an increasing SE as the number of BS antennas grows large. Numerical results corroborate our analysis and show the effect of the number of antennas, the number of users, and the total antenna array space on the sum SE performance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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