AI 中文总结
该研究针对6G通信的复合需求，提出Omni-PBS架构，通过三个功能域的光子技术应用及跨域协同设计，突破电子瓶颈并提升能效、降低前传带宽需求，为6G无线基础设施提供新方案。
AI 中文摘要
6G移动通信对更高数据速率和海量连接提出沉浸式通信需求，而新兴的集成感知-计算-智能场景要求基站同步提升计算能力、保障服务时延并实现感知功能。我们提出全光子基站（Omni-Photonic Base Station, Omni-PBS）——一种将光子技术引入基带处理、前传传输和射频前端三个功能域的渐进式演进架构，通过跨域协同设计获得系统级增益。引入光子技术后，Omni-PBS利用超宽带、超低传播时延和天然并行性的固有物理优势，突破上述电子瓶颈，满足6G场景的复合需求。光基带计算域采用光子加速器执行线性计算密集型任务，使AI推理的能效提升1至2个数量级；模拟光前传域用模拟光载无线技术替代数字前传，消除远端单元中的模数转换器（ADCs）、数模转换器（DACs）和数字中频芯片，大幅降低前传带宽需求；微波光子射频域通过光真时延波束成形、可编程光子滤波和光外差频率转换，突破电子射频前端的带宽和频率限制。三个域通过端到端光域连续性、跨域协同设计、光计算资源调度和功能拆分联合优化这四项协同设计原则，产生超出单域总和的系统级增益。
英文摘要
6G mobile communications impose immersive communication demands for higher data rates and massive connectivity, while emerging integrated sensing-computing-intelligence scenarios require base stations to concurrently enhance computing capability, guarantee service latency, and realize sensing. We propose the Omni-Photonic Base Station-a progressive evolutionary architecture that introduces photonic technologies into three functional domains, namely baseband processing, fronthaul transmission, and the RF front-end, and obtains system-level gains through cross-domain co-design. By introducing photonics, Omni-PBS harnesses the inherent physical advantages of ultra-broad bandwidth, ultra-low propagation latency, and native parallelism to transcend the aforementioned electronic bottlenecks and fulfill the compound demands of 6G scenarios. The optical baseband computing domain employs photonic accelerators to perform linear computation-intensive tasks, improving the energy efficiency of AI inference by one to two orders of magnitude. The analog optical fronthaul domain replaces digital fronthaul with analog radio-over-fiber , which eliminates the ADCs/DACs and digital intermediate-frequency chips in the remote unit and substantially reduces fronthaul bandwidth requirements. The microwave-photonic RF domain breaks through the bandwidth and frequency limitations of electronic RF front-ends via optical true-time-delay beamforming, programmable photonic filtering, and optical heterodyne frequency conversion. The three domains yield system-level gains beyond single-domain summation through four co-design principles: end-to-end optical-domain continuity, cross-domain co-design, optical computing resource scheduling, and joint optimization of functional splitting.
