Dense Multipath Component Characteristics in 11-GHz-Band Indoor Environments
Dense Multipath Component Characteristics in 11-GHz-Band Indoor Environments
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DOI：
10.1109/tap.2017.2728087
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发表时间：
2017-07
影响因子：
5.7
通讯作者：
Kentaro Saito;J. Takada;Minseok Kim
中科院分区：
文献类型：
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作者：
Kentaro Saito;J. Takada;Minseok Kim
在下一代移动的通信系统中，期望利用从C频带到V频带的更高频带，因为其具有通过可用的宽带频谱显著地提高网络容量的潜力。由于在这些频带中来自周围环境的反射和散射的无线电波的特性被认为与在较低频率下的特性完全不同，因此澄清其对多输入多输出（MIMO）传输性能的影响是一个关键问题。本文主要研究X波段的漫散射特性，并在室内环境下进行了11 GHz波段的MIMO信道测量。使用基于RiMAX的估计器联合估计频率、角度和极化域密集多径分量（DMC）传播参数。测量结果表明，存在显着的DMC，这被认为是源于地板，天花板以及墙壁。随着房间尺寸的减小，DMC的角扩展趋于增加，并且其衰减因子趋于减小。研究还表明，DMC的存在显着影响的MIMO信道的特征值结构，它定义了MIMO传输性能。该结果有望用于包括DMC贡献的X波段中的新型MIMO信道建模。
In the next-generation mobile communication system, the higher frequency bands from C-band to V-band are expected to be utilized because it has the potential to improve network capacity drastically by the available wideband spectrum. Since the characteristics of reflected and scattered radio waves from surrounding environments in those bands are thought to be quite different than at lower frequencies, the clarification of its influence on the multiple-input multiple-output (MIMO) transmission performance is a critical issue. In this paper, we focused on the characteristics of diffuse scattering in X-band, and conducted the MIMO channel measurements in indoor environments in the 11-GHz band. The frequency, angular, and polarization domain dense multipath component (DMC) propagation parameters were jointly estimated by using the RiMAX-based estimator. The measurement result showed the existence of significant DMC, which is thought to have originated from the floor, the ceiling as well as the walls. The angular spreads of the DMC tended to increase, and their decay factor tended to decrease as the room size decreased. It is also shown that the existence of DMC significantly affected the eigenvalue structure of the MIMO channel, which defines the MIMO transmission performance. The result is expected to be utilized for novel MIMO channel modeling in X-band that includes the DMC contribution.