This article considers a radio-over-cable (RoC)based analog link on a local area network (LAN) cable [e.g., category (CAT) 5] as the last hop of the fronthaul for indoor mobile service coverage. We first present state-of-the-art mobile systems with RoC-based fronthauls and then discuss a number of critical issues regarding real implementation. These issues include the function module, called the radio-cable access unit (RCU), that interfaces with the radio frequency (RF) and intermediate frequency (IF) signals along the LAN cable as well as the design of an RF front end (RF-FE) that supports time-division duplex (TDD) and frequency-division duplex (FDD) modes. Then, the proposed nonconfigurable distributed antenna unit (NC-DAU) and corresponding resource-mapping scheme [NC air-tocable (NC-A2C)] are introduced, aiming to achieve lowcost, large-scale indoor deployment. We examine the performance of the NC-A2C and compare it with the optimal case.

中文翻译：

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通过有线无线电前传实现有效的室内覆盖：模拟前传成熟

本文将局域网 (LAN) 电缆上的基于电缆无线电 (RoC) 的模拟链路 [例如，类别 (CAT) 5] 视为室内移动服务覆盖前传的最后一跳。我们首先展示具有基于 RoC 的前传的最先进移动系统，然后讨论有关实际实施的许多关键问题。这些问题包括称为无线电电缆接入单元 (RCU) 的功能模块，该模块与 LAN 电缆上的射频 (RF) 和中频 (IF) 信号以及射频前端 (RF -FE) 支持时分双工 (TDD) 和频分双工 (FDD) 模式。然后，介绍了所提出的不可配置分布式天线单元 (NC-DAU) 和相应的资源映射方案 [NC air-tocable (NC-A2C)]，旨在实现低成本，大规模室内部署。我们检查 NC-A2C 的性能并将其与最佳情况进行比较。