The Foundations of Future Communication Systems (FFCS) conference brought together leading researchers from information theory, quantum communication, molecular communication, semantic communication, and secure network design to explore the fundamental principles shaping next-generation communication systems. The event serves as a platform for interdisciplinary exchange, bridging classical Shannon theory, post-Shannon paradigms, quantum information science, and emerging physically grounded communication models. This report compiles the abstracts of all invited talks, contributed presentations, and poster contributions presented at FFCS. The collected works reflect the breadth of contemporary research directions, including identification-based communication, entanglement-assisted networks, semantic and goal-oriented communication, coding for molecular and nanoscale systems, secure authentication mechanisms, and information-theoretic limits of novel physical-layer architectures. A central theme of the conference was the re-examination of foundational limits under realistic physical, architectural, and security constraints. Many contributions move beyond traditional rate-centric perspectives and instead investigate reliability, identification, semantics, resource efficiency, and trust in complex and heterogeneous networks. The inclusion of poster abstracts further highlights emerging ideas, early-stage research results, and innovative cross-disciplinary approaches that contribute to shaping future communication paradigms. By documenting the intellectual landscape presented at FFCS, this report aims to provide a structured overview of current research frontiers and to stimulate continued collaboration across theoretical and experimental domains.

翻译：未来通信系统基础（FFCS）会议汇聚了来自信息论、量子通信、分子通信、语义通信及安全网络设计领域的顶尖研究者，共同探讨塑造下一代通信系统的基本原理。该活动为跨学科交流提供了平台，连接了经典香农理论、后香农范式、量子信息科学与新兴的基于物理的通信模型。本报告汇编了FFCS会议所有特邀演讲、会议报告及海报展示的摘要。这些收录成果反映了当代研究方向的广度，包括基于识别的通信、纠缠辅助网络、语义与目标导向通信、分子与纳米系统编码、安全认证机制，以及新型物理层架构的信息论极限。会议的核心主题是在现实物理、架构及安全约束下重新审视基本极限。许多研究超越了传统以速率为中心的视角，转而研究复杂异构网络中的可靠性、识别、语义、资源效率与信任度。海报摘要的收录进一步突显了新兴构想、早期研究成果以及跨学科创新方法，这些都为未来通信范式的形成提供了助力。通过记录FFCS会议所呈现的学术图景，本报告旨在提供当前研究前沿的结构化概览，并促进理论与实验领域的持续合作。