This paper presents ExPECA, an edge computing and wireless communication research testbed designed to tackle two pressing challenges: comprehensive end-to-end experimentation and high levels of experimental reproducibility. Leveraging OpenStack-based Chameleon Infrastructure (CHI) framework for its proven flexibility and ease of operation, ExPECA is located in a unique, isolated underground facility, providing a highly controlled setting for wireless experiments. The testbed is engineered to facilitate integrated studies of both communication and computation, offering a diverse array of Software-Defined Radios (SDR) and Commercial Off-The-Shelf (COTS) wireless and wired links, as well as containerized computational environments. We exemplify the experimental possibilities of the testbed using OpenRTiST, a latency-sensitive, bandwidth-intensive application, and analyze its performance. Lastly, we highlight an array of research domains and experimental setups that stand to gain from ExPECA's features, including closed-loop applications and time-sensitive networking.

翻译：本文介绍了ExPECA，一个面向边缘计算与无线通信研究的实验平台，旨在解决两大紧迫挑战：全面的端到端实验与高水平的实验可复现性。该平台基于OpenStack的Chameleon基础设施（CHI）框架，利用其经过验证的灵活性与易操作性，部署于独特、隔离的地下设施中，为无线实验提供高度可控的环境。ExPECA实验平台旨在促进通信与计算的集成研究，提供多种软件定义无线电（SDR）及商用现成（COTS）无线/有线链路，以及容器化计算环境。我们以对延迟敏感、带宽密集型的OpenRTiST应用为例，展示了该平台的实验可行性并分析其性能。最后，我们强调了众多能从ExPECA特性中受益的研究领域与实验配置，包括闭环应用与时间敏感网络。