This paper presents numerical analysis and simulation results in order to study the impact of interference between fixed service (FS) systems and 5G cellular networks at 28 GHz, 38 GHz, and 60 GHz millimeter-wave (mmWave) bands. For this study, two different scenarios were considered, i.e., the aggregation of interference from small cells into an FS receiver from (i) base stations (BSs) to their associated user equipment (UE) (downlink); (ii) from UEs to their associated BSs (uplink). The simulation results determined how much interference rejection is required to protect the operation of the FS. This study is essential when using mmWave technologies in cellular networks, to determine whether the newly deployed cellular systems can co-exist with pre-deployed FS systems or not. This paper presents closed-form numerical approximation results with Taylor series approximation along with intensive simulation results. Finally, this paper confirmed that the numerical approximation results were precise, i.e., that here were only marginal differences to the intensive simulation results.

中文翻译：

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蜂窝系统和固定业务系统之间毫米波频率共享的数值近似

本文提供了数值分析和仿真结果，以研究固定服务 (FS) 系统和 5G 蜂窝网络在 28 GHz、38 GHz 和 60 GHz 毫米波 (mmWave) 频段之间的干扰影响。在本研究中，考虑了两种不同的情况，即，从 (i) 基站 (BS) 到其相关用户设备 (UE)（下行链路），将来自小型小区的干扰聚合到 FS 接收机中；(ii) 从 UE 到其关联的 BS（上行链路）。仿真结果确定了需要多少干扰抑制来保护 FS 的操作。在蜂窝网络中使用毫米波技术时，这项研究至关重要，以确定新部署的蜂窝系统是否可以与预先部署的 FS 系统共存。本文介绍了泰勒级数近似的封闭形式数值近似结果以及密集的模拟结果。最后，本文证实数值近似结果是精确的，即，这里与密集模拟结果仅存在微小差异。