The 5G mobile communication systems introduce multiples functional splits between base station elements, new transmission bands and a large number of antennas supporting beamforming. In this scenario, a viable strategy to avoid building penetration losses is to deploy the antenna elements indoor and use a fronthaul link to establish the connection between them and the rest of the radio access network. This work explores a 5G fronthaul scheme based on analog radio over coaxial cables, leveraging this existing fixed access infrastructure to facilitate 5G deployments. Results indicate that the fronthaul solution discussed here is able to support the high capacity requirement of 5G, with the additional benefits of low transmit power, low latency and low cost. The main novelty of this paper is to investigate the potential of this kind of fronthaul architecture considering both the physical layer and economic aspects.

中文翻译：

---

基于同轴电缆的5G集中式无线接入网高效前传方案

5G移动通信系统在基站单元，新的传输频段和支持波束成形的大量天线之间引入了多种功能划分。在这种情况下，避免建筑物穿透损耗的可行策略是将天线元件部署在室内，并使用前传链路在天线元件和其余无线电接入网络之间建立连接。这项工作探索了一种基于同轴电缆上的模拟无线电的5G前传方案，并利用这种现有的固定接入基础设施来促进5G部署。结果表明，此处讨论的前传解决方案能够满足5G的高容量要求，并具有低发射功率，低延迟和低成本的其他优势。