Abstract In this paper, we present the radiated mode indoor radio coverage performance study of a co-existing dual technology, dual 4×4 Multiple Input Multiple Output (MIMO) antenna platform. The antenna platform is targeted to be used for low power wireless radio Base Station (BS) applications. One of the 4×4 MIMO antenna pairs operates in the 2.5–2.7 GHz licensed Long Term Evolution (LTE) band while the other MIMO antenna pair operates in the 2.4 GHz unlicensed Wireless Fidelity (Wi-Fi) Industrial Scientific Medical (ISM) band. This radio performance study is carried out to analyze, predict and verify the impact of multi-radio co-existence on the radiated mode indoor coverage performance in an Over-The-Air (OTA) scenario. The study involves OTA radio propagation modeling, prediction and verification both for a near field and far field scenario. While the near field coverage is studied in a small form factor controlled shield box environment, the far field coverage study is undertaken over a 780 ft 2 indoor enterprise coverage area. The test result shows the worst case LTE signal level is –77.7, –75, and –76.03 dBm, respectively, over a 3.6 m obstructed radial Line Of Sight (LOS) distance.

中文翻译：

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低功耗无线基站双技术共存MIMO天线平台室内无线覆盖性能研究

摘要 在本文中，我们介绍了共存双技术、双 4×4 多输入多输出 (MIMO) 天线平台的辐射模式室内无线电覆盖性能研究。该天线平台旨在用于低功率无线电基站 (BS) 应用。4×4 MIMO 天线对之一在 2.5–2.7 GHz 许可长期演进 (LTE) 频段运行，而另一个 MIMO 天线对在 2.4 GHz 非许可无线保真 (Wi-Fi) 工业科学医疗 (ISM) 频段运行. 该无线电性能研究旨在分析、预测和验证多无线电共存对空中 (OTA) 场景中辐射模式室内覆盖性能的影响。该研究涉及近场和远场场景的 OTA 无线电传播建模、预测和验证。虽然近场覆盖是在小尺寸受控屏蔽盒环境中研究的，但远场覆盖研究是在 780 英尺 2 的室内企业覆盖区域内进行的。测试结果显示，最坏情况下 LTE 信号电平分别为 –77.7、–75 和 –76.03 dBm，超过 3.6 m 受阻径向视线 (LOS) 距离。