IF 5.3 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Martin Lerch;Philipp Svoboda;Josef Resch;Markus Rupp
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引用次数: 0

摘要

车载中继器系统通过对车顶拾取天线接收到的信号进行放大,并将放大后的信号分布在车厢内,提高了车厢内的移动覆盖范围。上行信号相应地在车内接收,通过车顶天线进行放大和传输。同时,放大的噪声也被传播。在上行方向上,这会导致整个小区的移动通信受损。然而,在车载中继器系统中存在上行干扰的其他来源,可能被错误地解释为附加噪声。除了加性噪声的影响外,本文还研究了由于直接通过窗口传播而产生的符号间干扰的影响,由于室内天线中可能发生的无源互调而产生的干扰,以及由于室内和室外天线之间有限隔离而产生的干扰。介绍了车载中继器系统的路径损耗模型。在此基础上,实验研究了不同干扰源对上行链路的影响。根据干扰的类型,我们对不同的系统参数进行了研究,例如窗口的穿透损耗,室内外天线之间的隔离以及中继器的增益设置。本研究的发现为网络运营商和研究人员提供了有价值的见解,促进了健壮和高效的车载中继器系统的设计,增强了蜂窝无线网络的连接性和用户体验。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cellular Uplink Impairments in Vehicular Repeater Deployments
Vehicular repeater systems improve the mobile coverage inside railroad cars by amplifying the signals received by a pick-up antenna on the roof and distributing the amplified signals inside the car. Uplink signals are received accordingly in the cars, amplified and transmitted via the roof antenna. At the same time, amplified noise is also transmitted. In uplink direction, this can lead to impairments of mobile communication in the entire cell. However, in vehicular repeater systems there are other sources of uplink interference that could be mistakenly be interpreted as additive noise. In addition to the influence of additive noise, in this paper we investigate the influence of inter-symbol interference due to direct propagation through the windows, interference due to passive intermodulation that can occur in the indoor antenna, and interference due to limited isolation between the indoor and outdoor antenna. We introduce a pathloss model for a vehicle repeater system. Based on this model, we investigate the influence of these different sources of interference on the uplink experimentally. Depending on the kind of interference, we conduct our investigations over different system parameters, such as the penetration loss of the windows, isolation between the indoor and outdoor antenna, and the gain settings of the repeater. The findings presented in this study provide valuable insights for network operators and researchers, facilitating the design of robust and efficient vehicular repeater systems that enhance connectivity and user experience in cellular wireless networks.
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来源期刊
CiteScore
9.60
自引率
0.00%
发文量
25
审稿时长
10 weeks
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